Fix cross app installation (#18151)

# Introduction
- Fixing app dependencyFlatEntityMaps load ( to load current app +
dependent app )
- Fix empty flat entity maps and undefined optimistic override
- Refactor the optimistic rendering to be mutation oriented at
orchestrator level

packages/twenty-server/src/engine/metadata-modules/flat-entity/constant/all-metadata-required-metadata-for-validation.constant.ts

@@ -11,6 +11,10 @@ type MetadataRequiredForValidation = {
   };
 };
 
+export type MetadataRelatedMetadataNameForValidation<
+  T extends AllMetadataName,
+> = keyof (typeof ALL_METADATA_REQUIRED_METADATA_FOR_VALIDATION)[T];
+
 // TODO deprecate in favor of ALL_METADATA_SERIALIZED_RELATION
 export const ALL_METADATA_REQUIRED_METADATA_FOR_VALIDATION = {
   fieldMetadata: {

packages/twenty-server/src/engine/metadata-modules/flat-entity/constant/all-metadata-serialized-relation.constant.ts

@@ -12,6 +12,9 @@ type MetadataSerializedRelationProperties = {
     : Partial<Record<AllMetadataName, true>>;
 };
 
+export type MetadataSerializedRelatedMetadataName<T extends AllMetadataName> =
+  keyof (typeof ALL_METADATA_SERIALIZED_RELATION)[T];
+
 export const ALL_METADATA_SERIALIZED_RELATION = {
   agent: {},
   skill: {},