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/twenty-orm/utils/format-data.util.ts

@@ -7,6 +7,7 @@ import { capitalize } from 'twenty-shared/utils';
 import { type CompositeFieldMetadataType } from 'src/engine/metadata-modules/field-metadata/types/composite-field-metadata-type.type';
 import { isCompositeFieldMetadataType } from 'src/engine/metadata-modules/field-metadata/utils/is-composite-field-metadata-type.util';
 import { type 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 { type FlatFieldMetadata } from 'src/engine/metadata-modules/flat-field-metadata/types/flat-field-metadata.type';
 import {
   buildFieldMapsFromFlatObjectMetadata,
@@ -45,7 +46,10 @@ export function formatData<T>(
   for (const [key, value] of Object.entries(data)) {
     const fieldMetadataId = fieldIdByName[key] || fieldIdByJoinColumnName[key];
 
-    const fieldMetadata = flatFieldMetadataMaps.byId[fieldMetadataId];
+    const fieldMetadata = findFlatEntityByIdInFlatEntityMaps({
+      flatEntityId: fieldMetadataId,
+      flatEntityMaps: flatFieldMetadataMaps,
+    });
 
     if (!fieldMetadata) {
       throw new Error(