[REQUIRES_FULL_CACHE_FLUSH_WHEN_RELEASED] Refactor FlatEntity to be UniversalFlatEntity superset (#17452)

# Introduction
In this PR we're refactoring the `FlatEntity` type to become a superset
of the `UniversalFlatEntity`.
Right now we're storing all the extra properties in `__universal`
property, at some point it might just be sibling to other entity and we
might rely on the `propertiesToCompare` constants and TypeScript
allowing passing a superset type into a smaller subset type

## FromTo utils
The entity to flat entity method now computes the universal information,
standardized a typing and pattern to do

## Example
Also strictly type
```ts
    "bbb019ea-6205-498c-aea5-67bc53bce8a9": {
      "workspaceId": "20202020-1c25-4d02-bf25-6aeccf7ea419",
      "universalIdentifier": "20202020-d111-4d11-8d11-da5ab0a11002",
      "applicationId": "d01b010d-b984-465b-b40b-370e954e5188",
      "id": "bbb019ea-6205-498c-aea5-67bc53bce8a9",
      "pageLayoutTabId": "791a512f-169f-4209-b731-aa86716668c6",
      "title": "Deals by Company",
      "type": "GRAPH",
      "objectMetadataId": "9e14efea-df5b-4c0e-aba9-cfe455f32397",
      "gridPosition": { "row": 0, "column": 6, "rowSpan": 6, "columnSpan": 6 },
      "configuration": {
        "color": "orange",
        "orderBy": "FIELD_ASC",
        "timezone": "UTC",
        "displayLegend": true,
        "displayDataLabel": false,
        "showCenterMetric": true,
        "configurationType": "PIE_CHART",
        "firstDayOfTheWeek": 0,
        "aggregateOperation": "COUNT",
        "groupBySubFieldName": "name",
        "groupByFieldMetadataId": "6673ff18-63d2-47a1-8f85-2b9b09ca27a5",
        "aggregateFieldMetadataId": "8d64ee41-5dd4-4de6-945a-7c0c18399715"
      },
      "createdAt": "2026-01-28T14:08:52.140Z",
      "updatedAt": "2026-01-28T14:08:52.140Z",
      "deletedAt": null,
      "__universal": {
        "universalIdentifier": "20202020-d111-4d11-8d11-da5ab0a11002",
        "applicationUniversalIdentifier": "20202020-64aa-4b6f-b003-9c74b97cee20",
        "pageLayoutTabUniversalIdentifier": "20202020-d011-4d11-8d11-da5ab0a01001",
        "objectMetadataUniversalIdentifier": "20202020-9549-49dd-b2b2-883999db8938",
        "gridPosition": {
          "row": 0,
          "column": 6,
          "rowSpan": 6,
          "columnSpan": 6
        },
        "configuration": {
          "color": "orange",
          "orderBy": "FIELD_ASC",
          "timezone": "UTC",
          "displayLegend": true,
          "displayDataLabel": false,
          "showCenterMetric": true,
          "configurationType": "PIE_CHART",
          "firstDayOfTheWeek": 0,
          "aggregateOperation": "COUNT",
          "groupBySubFieldName": "name",
          "aggregateFieldMetadataUniversalIdentifier": "20202020-d01a-4131-8a31-f123456789ab",
          "groupByFieldMetadataUniversalIdentifier": "20202020-cbac-457e-b565-adece5fc815f"
        }
      }
    },
```

packages/twenty-server/src/modules/connected-account/query-hooks/connected-account-delete-one.pre-query.hook.ts

@@ -1,7 +1,5 @@
-import { InjectRepository } from '@nestjs/typeorm';
-
 import { assertIsDefinedOrThrow } from 'twenty-shared/utils';
-import { Repository } from 'typeorm';
+import { STANDARD_OBJECT_IDS } from 'twenty-shared/metadata';
 
 import { type WorkspacePreQueryHookInstance } from 'src/engine/api/graphql/workspace-query-runner/workspace-query-hook/interfaces/workspace-query-hook.interface';
 import { type DeleteOneResolverArgs } from 'src/engine/api/graphql/workspace-resolver-builder/interfaces/workspace-resolvers-builder.interface';
@@ -11,8 +9,8 @@ import { DatabaseEventAction } from 'src/engine/api/graphql/graphql-query-runner
 import { WorkspaceQueryHook } from 'src/engine/api/graphql/workspace-query-runner/workspace-query-hook/decorators/workspace-query-hook.decorator';
 import { type AuthContext } from 'src/engine/core-modules/auth/types/auth-context.type';
 import { WorkspaceNotFoundDefaultError } from 'src/engine/core-modules/workspace/workspace.exception';
-import { fromObjectMetadataEntityToFlatObjectMetadata } from 'src/engine/metadata-modules/flat-object-metadata/utils/from-object-metadata-entity-to-flat-object-metadata.util';
-import { ObjectMetadataEntity } from 'src/engine/metadata-modules/object-metadata/object-metadata.entity';
+import { WorkspaceManyOrAllFlatEntityMapsCacheService } from 'src/engine/metadata-modules/flat-entity/services/workspace-many-or-all-flat-entity-maps-cache.service';
+import { findFlatEntityByUniversalIdentifierOrThrow } from 'src/engine/metadata-modules/flat-entity/utils/find-flat-entity-by-universal-identifier-or-throw.util';
 import { GlobalWorkspaceOrmManager } from 'src/engine/twenty-orm/global-workspace-datasource/global-workspace-orm.manager';
 import { WorkspaceEventEmitter } from 'src/engine/workspace-event-emitter/workspace-event-emitter';
 import { type MessageChannelWorkspaceEntity } from 'src/modules/messaging/common/standard-objects/message-channel.workspace-entity';
@@ -24,8 +22,7 @@ export class ConnectedAccountDeleteOnePreQueryHook
   constructor(
     private readonly globalWorkspaceOrmManager: GlobalWorkspaceOrmManager,
     private readonly workspaceEventEmitter: WorkspaceEventEmitter,
-    @InjectRepository(ObjectMetadataEntity)
-    private readonly objectMetadataRepository: Repository<ObjectMetadataEntity>,
+    private readonly workspaceManyOrAllFlatEntityMapsCacheService: WorkspaceManyOrAllFlatEntityMapsCacheService,
   ) {}
 
   async execute(
@@ -55,17 +52,18 @@ export class ConnectedAccountDeleteOnePreQueryHook
         authContext as WorkspaceAuthContext,
       );
 
-    const objectMetadataEntity =
-      await this.objectMetadataRepository.findOneOrFail({
-        where: {
-          nameSingular: 'messageChannel',
+    const { flatObjectMetadataMaps } =
+      await this.workspaceManyOrAllFlatEntityMapsCacheService.getOrRecomputeManyOrAllFlatEntityMaps(
+        {
           workspaceId: workspace.id,
+          flatMapsKeys: ['flatObjectMetadataMaps'],
         },
-        relations: ['fields', 'indexMetadatas', 'views'],
-      });
+      );
 
-    const flatObjectMetadata =
-      fromObjectMetadataEntityToFlatObjectMetadata(objectMetadataEntity);
+    const flatObjectMetadata = findFlatEntityByUniversalIdentifierOrThrow({
+      flatEntityMaps: flatObjectMetadataMaps,
+      universalIdentifier: STANDARD_OBJECT_IDS.messageChannel,
+    });
 
     // TODO: handle cascade events for delete
     this.workspaceEventEmitter.emitDatabaseBatchEvent({

packages/twenty-server/src/modules/connected-account/query-hooks/connected-account-query-hook.module.ts

@@ -2,11 +2,15 @@ import { Module } from '@nestjs/common';
 
 import { NestjsQueryTypeOrmModule } from '@ptc-org/nestjs-query-typeorm';
 
+import { WorkspaceManyOrAllFlatEntityMapsCacheModule } from 'src/engine/metadata-modules/flat-entity/services/workspace-many-or-all-flat-entity-maps-cache.module';
 import { ObjectMetadataEntity } from 'src/engine/metadata-modules/object-metadata/object-metadata.entity';
 import { ConnectedAccountDeleteOnePreQueryHook } from 'src/modules/connected-account/query-hooks/connected-account-delete-one.pre-query.hook';
 
 @Module({
-  imports: [NestjsQueryTypeOrmModule.forFeature([ObjectMetadataEntity])],
+  imports: [
+    NestjsQueryTypeOrmModule.forFeature([ObjectMetadataEntity]),
+    WorkspaceManyOrAllFlatEntityMapsCacheModule,
+  ],
   providers: [ConnectedAccountDeleteOnePreQueryHook],
 })
 export class ConnectedAccountQueryHookModule {}