Remove sync-metadata and IS_WORKSPACE_CREATION_V2_ENABLED feature flag (#16997)

# Introduction
Followup of
https://github.com/twentyhq/twenty/pull/17001#pullrequestreview-3638508738
close https://github.com/twentyhq/core-team-issues/issues/1910

We've completely decom the `sync-metadata` in production. We're now then
removing its implementation in favor of the v2.

## TODO:
- [x] Remove sync-metadata implem and commands
- [x] Remove workspace decorators 
- [x] Type each deprecated field to deprecated on their workspaceEntity
- [x] Remove the `workspace-sync-metadata` folder entirely
- [x] remove workspace migration
- [x] workspace migration removal migration
- [x] remove the `v2` references from workspace manager file names
- [x] remove the `v2` references from workspace manager modules
- [ ] Double check impact on translation file path updates


## Note
- Removed the gate logic
- Remains some service v2 naming, serverless needs to be migrated on v2
fully
- Removed workspaceMigration service app health consumption, making it
always returning up ( no more down ) cc @FelixMalfait ( quite obsolete
health check now, will require complete refactor once we introduce inter
app dependency etc )

packages/twenty-server/src/engine/metadata-modules/route-trigger/route-trigger.entity.ts

@@ -11,8 +11,8 @@ import {
   UpdateDateColumn,
 } from 'typeorm';
 
-import { SyncableEntity } from 'src/engine/workspace-manager/workspace-sync/types/syncable-entity.interface';
 import { ServerlessFunctionEntity } from 'src/engine/metadata-modules/serverless-function/serverless-function.entity';
+import { SyncableEntity } from 'src/engine/workspace-manager/types/syncable-entity.interface';
 
 @Entity({ name: 'routeTrigger', schema: 'core' })
 @Unique('IDX_ROUTE_TRIGGER_PATH_HTTP_METHOD_WORKSPACE_ID_UNIQUE', [

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

@@ -13,7 +13,7 @@ import { RouteTriggerService } from 'src/engine/metadata-modules/route-trigger/r
 import { RouteTriggerV2Service } from 'src/engine/metadata-modules/route-trigger/services/route-trigger-v2.service';
 import { WorkspaceFlatRouteTriggerMapCacheService } from 'src/engine/metadata-modules/route-trigger/services/workspace-flat-route-trigger-map-cache.service';
 import { ServerlessFunctionModule } from 'src/engine/metadata-modules/serverless-function/serverless-function.module';
-import { WorkspaceMigrationV2Module } from 'src/engine/workspace-manager/workspace-migration-v2/workspace-migration-v2.module';
+import { WorkspaceMigrationModule } from 'src/engine/workspace-manager/workspace-migration/workspace-migration.module';
 
 @Module({
   imports: [
@@ -24,7 +24,7 @@ import { WorkspaceMigrationV2Module } from 'src/engine/workspace-manager/workspa
     ServerlessFunctionModule,
     WorkspaceManyOrAllFlatEntityMapsCacheModule,
     PermissionsModule,
-    WorkspaceMigrationV2Module,
+    WorkspaceMigrationModule,
   ],
   controllers: [RouteTriggerController],
   providers: [

packages/twenty-server/src/engine/metadata-modules/route-trigger/services/route-trigger-v2.service.ts

@@ -15,8 +15,8 @@ import {
 import { FlatRouteTrigger } from 'src/engine/metadata-modules/route-trigger/types/flat-route-trigger.type';
 import { fromCreateRouteTriggerInputToFlatRouteTrigger } from 'src/engine/metadata-modules/route-trigger/utils/from-create-route-trigger-input-to-flat-route-trigger.util';
 import { fromUpdateRouteTriggerInputToFlatRouteTriggerToUpdateOrThrow } from 'src/engine/metadata-modules/route-trigger/utils/from-update-route-trigger-input-to-flat-route-trigger-to-update-or-throw.util';
-import { WorkspaceMigrationBuilderExceptionV2 } from 'src/engine/workspace-manager/workspace-migration-v2/exceptions/workspace-migration-builder-exception-v2';
-import { WorkspaceMigrationValidateBuildAndRunService } from 'src/engine/workspace-manager/workspace-migration-v2/services/workspace-migration-validate-build-and-run-service';
+import { WorkspaceMigrationBuilderException } from 'src/engine/workspace-manager/workspace-migration/exceptions/workspace-migration-builder-exception';
+import { WorkspaceMigrationValidateBuildAndRunService } from 'src/engine/workspace-manager/workspace-migration/services/workspace-migration-validate-build-and-run-service';
 
 @Injectable()
 export class RouteTriggerV2Service {
@@ -66,7 +66,7 @@ export class RouteTriggerV2Service {
       );
 
     if (isDefined(validateAndBuildResult)) {
-      throw new WorkspaceMigrationBuilderExceptionV2(
+      throw new WorkspaceMigrationBuilderException(
         validateAndBuildResult,
         'Multiple validation errors occurred while creating route',
       );
@@ -120,7 +120,7 @@ export class RouteTriggerV2Service {
       );
 
     if (isDefined(validateAndBuildResult)) {
-      throw new WorkspaceMigrationBuilderExceptionV2(
+      throw new WorkspaceMigrationBuilderException(
         validateAndBuildResult,
         'Multiple validation errors occurred while updating route',
       );
@@ -181,7 +181,7 @@ export class RouteTriggerV2Service {
       );
 
     if (isDefined(validateAndBuildResult)) {
-      throw new WorkspaceMigrationBuilderExceptionV2(
+      throw new WorkspaceMigrationBuilderException(
         validateAndBuildResult,
         'Multiple validation errors occurred while destroying route',
       );

packages/twenty-server/src/engine/metadata-modules/route-trigger/services/workspace-flat-route-trigger-map-cache.service.ts

@@ -12,7 +12,7 @@ import { getMetadataEntityRelationProperties } from 'src/engine/metadata-modules
 import { RouteTriggerEntity } from 'src/engine/metadata-modules/route-trigger/route-trigger.entity';
 import { FlatRouteTrigger } from 'src/engine/metadata-modules/route-trigger/types/flat-route-trigger.type';
 import { WorkspaceCache } from 'src/engine/workspace-cache/decorators/workspace-cache.decorator';
-import { addFlatEntityToFlatEntityMapsThroughMutationOrThrow } from 'src/engine/workspace-manager/workspace-migration-v2/utils/add-flat-entity-to-flat-entity-maps-through-mutation-or-throw.util';
+import { addFlatEntityToFlatEntityMapsThroughMutationOrThrow } from 'src/engine/workspace-manager/workspace-migration/utils/add-flat-entity-to-flat-entity-maps-through-mutation-or-throw.util';
 
 @Injectable()
 @WorkspaceCache('flatRouteTriggerMaps')