Refactor flat entity maps to be universal oriented (#17665)

# Introduction
In preparation of the workspace agnostic builder, we're migrating
`FlatEntityMaps` to be universal identifier oriented and based
As in the builder context there're won't be any ids at all
Please also note that the FlatEntity is a UniversalFlatEntity superset

From
```ts
import { type SyncableFlatEntity } from 'src/engine/metadata-modules/flat-entity/types/flat-entity-from.type';

export type FlatEntityMaps<T extends SyncableFlatEntity> = {
  byId: Partial<Record<string, T>>;
  idByUniversalIdentifier: Partial<Record<string, string>>;
  universalIdentifiersByApplicationId: Partial<Record<string, string[]>>;
};
```

To
```ts
export type FlatEntityMaps<
  T extends SyncableFlatEntity | UniversalSyncableFlatEntity,
> = {
  byUniversalIdentifier: Partial<Record<string, T>>;
  universalIdentifierById: Partial<Record<string, string>>;
  universalIdentifiersByApplicationId: Partial<Record<string, string[]>>; // this might make more sense to be migrated to universalIdentifiersByApplicationUniversalIdentifier but it's the main topic of this PR
};
```

## Low level maps tools
Had to refactor find | create | delete | replace | find-many | get-sub
tools ( through mutations and or throw equivalent )

packages/twenty-server/src/engine/api/common/common-args-processors/data-arg-processor/data-arg.processor.ts

@@ -55,6 +55,7 @@ import { transformPhonesValue } from 'src/engine/core-modules/record-transformer
 import { transformRichTextV2Value } from 'src/engine/core-modules/record-transformer/utils/transform-rich-text-v2.util';
 import { WorkspaceNotFoundDefaultError } from 'src/engine/core-modules/workspace/workspace.exception';
 import { FlatEntityMaps } from 'src/engine/metadata-modules/flat-entity/types/flat-entity-maps.type';
+import { findFlatEntityByIdInFlatEntityMaps } from 'src/engine/metadata-modules/flat-entity/utils/find-flat-entity-by-id-in-flat-entity-maps.util';
 import { FlatFieldMetadata } from 'src/engine/metadata-modules/flat-field-metadata/types/flat-field-metadata.type';
 import { buildFieldMapsFromFlatObjectMetadata } from 'src/engine/metadata-modules/flat-field-metadata/utils/build-field-maps-from-flat-object-metadata.util';
 import { FlatObjectMetadata } from 'src/engine/metadata-modules/flat-object-metadata/types/flat-object-metadata.type';
@@ -119,7 +120,10 @@ export class DataArgProcessor {
           );
         }
 
-        const fieldMetadata = flatFieldMetadataMaps.byId[fieldMetadataId];
+        const fieldMetadata = findFlatEntityByIdInFlatEntityMaps({
+          flatEntityId: fieldMetadataId,
+          flatEntityMaps: flatFieldMetadataMaps,
+        });
 
         if (!fieldMetadata) {
           throw new CommonQueryRunnerException(

packages/twenty-server/src/engine/api/common/common-args-processors/query-runner-args.factory.ts

@@ -7,6 +7,7 @@ import { type ObjectRecordFilter } from 'src/engine/api/graphql/workspace-query-
 
 import { RecordInputTransformerService } from 'src/engine/core-modules/record-transformer/services/record-input-transformer.service';
 import { FlatEntityMaps } from 'src/engine/metadata-modules/flat-entity/types/flat-entity-maps.type';
+import { findFlatEntityByIdInFlatEntityMaps } from 'src/engine/metadata-modules/flat-entity/utils/find-flat-entity-by-id-in-flat-entity-maps.util';
 import { FlatFieldMetadata } from 'src/engine/metadata-modules/flat-field-metadata/types/flat-field-metadata.type';
 import { buildFieldMapsFromFlatObjectMetadata } from 'src/engine/metadata-modules/flat-field-metadata/utils/build-field-maps-from-flat-object-metadata.util';
 import { FlatObjectMetadata } from 'src/engine/metadata-modules/flat-object-metadata/types/flat-object-metadata.type';
@@ -69,7 +70,10 @@ export class QueryRunnerArgsFactory {
   ) {
     const fieldMetadataId = fieldIdByName[key];
     const fieldMetadata = fieldMetadataId
-      ? flatFieldMetadataMaps.byId[fieldMetadataId]
+      ? findFlatEntityByIdInFlatEntityMaps({
+          flatEntityId: fieldMetadataId,
+          flatEntityMaps: flatFieldMetadataMaps,
+        })
       : undefined;
 
     if (!fieldMetadata) {
@@ -103,7 +107,10 @@ export class QueryRunnerArgsFactory {
     flatObjectMetadata: FlatObjectMetadata,
     flatFieldMetadataMaps: FlatEntityMaps<FlatFieldMetadata>,
   ) {
-    const fieldMetadata = flatFieldMetadataMaps.byId[fieldIdByName[key]];
+    const fieldMetadata = findFlatEntityByIdInFlatEntityMaps({
+      flatEntityId: fieldIdByName[key],
+      flatEntityMaps: flatFieldMetadataMaps,
+    });
 
     if (!fieldMetadata) {
       return value;