Remove old relations (#11993)

This is a first PR to remove old relation logic

Next steps:
- remove relationMetadata from cache
- remove relationMetadata table content and structure
- refactor relationDefinition to leverage field.settings instead

packages/twenty-server/src/database/commands/upgrade-version-command/0-53/0-53-remove-relation-foreign-key-field-metadata.command.ts

@@ -9,11 +9,11 @@ import {
   ActiveOrSuspendedWorkspacesMigrationCommandRunner,
   RunOnWorkspaceArgs,
 } from 'src/database/commands/command-runners/active-or-suspended-workspaces-migration.command-runner';
-import { FeatureFlagKey } from 'src/engine/core-modules/feature-flag/enums/feature-flag-key.enum';
 import { FeatureFlagService } from 'src/engine/core-modules/feature-flag/services/feature-flag.service';
 import { Workspace } from 'src/engine/core-modules/workspace/workspace.entity';
 import { FieldMetadataEntity } from 'src/engine/metadata-modules/field-metadata/field-metadata.entity';
 import { TwentyORMGlobalManager } from 'src/engine/twenty-orm/twenty-orm-global.manager';
+import { FeatureFlagKey } from 'src/engine/core-modules/feature-flag/enums/feature-flag-key.enum';
 
 @Command({
   name: 'upgrade:0-53:remove-relation-foreign-key-field-metadata',
@@ -67,7 +67,7 @@ export class RemoveRelationForeignKeyFieldMetadataCommand extends ActiveOrSuspen
       );
     } else {
       await this.featureFlagService.enableFeatureFlags(
-        [FeatureFlagKey.IsNewRelationEnabled],
+        ['IS_NEW_RELATION_ENABLED' as FeatureFlagKey],
         workspaceId,
       );
       await this.fieldMetadataRepository.delete({

packages/twenty-server/src/database/typeorm-seeds/core/feature-flags.ts

@@ -45,11 +45,6 @@ export const seedFeatureFlags = async (
         workspaceId: workspaceId,
         value: false,
       },
-      {
-        key: FeatureFlagKey.IsNewRelationEnabled,
-        workspaceId: workspaceId,
-        value: true,
-      },
     ])
     .execute();
 };