Fix flat entity maps date serialization (#16420)

Changes:
- as we store date in redis as serialized, let's make all flatEntity
dates as string. This requires changing FlatEntity types and making sure
that entity are converted to flatEntity and flatEntity to dtos

packages/twenty-server/src/engine/metadata-modules/view/services/view.service.ts

@@ -21,6 +21,7 @@ import { UpdateViewInput } from 'src/engine/metadata-modules/view/dtos/inputs/up
 import { ViewDTO } from 'src/engine/metadata-modules/view/dtos/view.dto';
 import { ViewEntity } from 'src/engine/metadata-modules/view/entities/view.entity';
 import { ViewVisibility } from 'src/engine/metadata-modules/view/enums/view-visibility.enum';
+import { fromFlatViewToViewDto } from 'src/engine/metadata-modules/view/utils/from-flat-view-to-view-dto.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';
 
@@ -104,10 +105,12 @@ export class ViewService {
         },
       );
 
-    return findFlatEntityByIdInFlatEntityMapsOrThrow({
-      flatEntityId: flatViewToCreate.id,
-      flatEntityMaps: recomputedExistingFlatViewMaps,
-    });
+    return fromFlatViewToViewDto(
+      findFlatEntityByIdInFlatEntityMapsOrThrow({
+        flatEntityId: flatViewToCreate.id,
+        flatEntityMaps: recomputedExistingFlatViewMaps,
+      }),
+    );
   }
 
   async updateOne({
@@ -178,10 +181,12 @@ export class ViewService {
         },
       );
 
-    return findFlatEntityByIdInFlatEntityMapsOrThrow({
-      flatEntityId: updateViewInput.id,
-      flatEntityMaps: recomputedExistingFlatViewMaps,
-    });
+    return fromFlatViewToViewDto(
+      findFlatEntityByIdInFlatEntityMapsOrThrow({
+        flatEntityId: updateViewInput.id,
+        flatEntityMaps: recomputedExistingFlatViewMaps,
+      }),
+    );
   }
 
   async deleteOne({
@@ -235,10 +240,12 @@ export class ViewService {
         },
       );
 
-    return findFlatEntityByIdInFlatEntityMapsOrThrow({
-      flatEntityId: deleteViewInput.id,
-      flatEntityMaps: recomputedExistingFlatViewMaps,
-    });
+    return fromFlatViewToViewDto(
+      findFlatEntityByIdInFlatEntityMapsOrThrow({
+        flatEntityId: deleteViewInput.id,
+        flatEntityMaps: recomputedExistingFlatViewMaps,
+      }),
+    );
   }
 
   async destroyOne({
@@ -283,7 +290,7 @@ export class ViewService {
       );
     }
 
-    return flatViewFromDestroyInput;
+    return fromFlatViewToViewDto(flatViewFromDestroyInput);
   }
 
   processViewNameWithTemplate(

packages/twenty-server/src/engine/metadata-modules/view/utils/from-flat-view-to-view-dto.util.ts

@@ -0,0 +1,13 @@
+import { type FlatView } from 'src/engine/metadata-modules/flat-view/types/flat-view.type';
+import { type ViewDTO } from 'src/engine/metadata-modules/view/dtos/view.dto';
+
+export const fromFlatViewToViewDto = (flatView: FlatView): ViewDTO => {
+  const { createdAt, updatedAt, deletedAt, ...rest } = flatView;
+
+  return {
+    ...rest,
+    createdAt: new Date(createdAt),
+    updatedAt: new Date(updatedAt),
+    deletedAt: deletedAt ? new Date(deletedAt) : null,
+  };
+};