Fix remote object read-only + remove relations (#4921)

- Set `readOnly` boolean in table row context. Preventing updates and
deletion
- Show page is null for remote objects. No need for complicated design
since this is temporary?
- Relation creations are now behind a feature flag for remote objects
- Refetch objects and views after syncing objects

---------

Co-authored-by: Thomas Trompette <thomast@twenty.com>

packages/twenty-server/src/engine/metadata-modules/object-metadata/object-metadata.module.ts

@@ -1,4 +1,5 @@
 import { Module } from '@nestjs/common';
+import { TypeOrmModule } from '@nestjs/typeorm';
 
 import {
   NestjsQueryGraphQLModule,
@@ -15,6 +16,8 @@ import { TypeORMModule } from 'src/database/typeorm/typeorm.module';
 import { FieldMetadataEntity } from 'src/engine/metadata-modules/field-metadata/field-metadata.entity';
 import { RelationMetadataEntity } from 'src/engine/metadata-modules/relation-metadata/relation-metadata.entity';
 import { ObjectMetadataResolver } from 'src/engine/metadata-modules/object-metadata/object-metadata.resolver';
+import { FeatureFlagModule } from 'src/engine/core-modules/feature-flag/feature-flag.module';
+import { FeatureFlagEntity } from 'src/engine/core-modules/feature-flag/feature-flag.entity';
 
 import { ObjectMetadataService } from './object-metadata.service';
 import { ObjectMetadataEntity } from './object-metadata.entity';
@@ -32,9 +35,11 @@ import { ObjectMetadataDTO } from './dtos/object-metadata.dto';
           [ObjectMetadataEntity, FieldMetadataEntity, RelationMetadataEntity],
           'metadata',
         ),
+        TypeOrmModule.forFeature([FeatureFlagEntity], 'core'),
         DataSourceModule,
         WorkspaceMigrationModule,
         WorkspaceMigrationRunnerModule,
+        FeatureFlagModule,
       ],
       services: [ObjectMetadataService],
       resolvers: [