Fix storybook / chromatic tests flakyness and integration tests (#11687)

## Storybook flakyness

### Actor Display image flakyness

<img width="1512" alt="image"
src="https://github.com/user-attachments/assets/875c0738-5e31-4aba-9231-4ba5f78d1355"
/>

**Fix:** stop using a random usage

### Task Groups broken

<img width="1512" alt="image"
src="https://github.com/user-attachments/assets/c67e47a1-a027-43f1-9601-68d61a8052b4"
/>

**Fix:** add missing TabListComponentInstance

## Flaky dates

Add https://github.com/k35o/storybook-addon-mock-date

## Integration tests

Fix broken tests due to relation refactoring

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

@@ -310,17 +310,17 @@ export class ObjectMetadataService extends TypeOrmQueryService<ObjectMetadataEnt
 
     const updatedObject = await super.updateOne(inputId, inputPayload);
 
+    const isNewRelationEnabled = await this.featureFlagService.isFeatureEnabled(
+      FeatureFlagKey.IsNewRelationEnabled,
+      workspaceId,
+    );
+
     await this.handleObjectNameAndLabelUpdates(
       existingObjectMetadata,
       existingObjectMetadataCombinedWithUpdateInput,
       inputPayload,
     );
 
-    const isNewRelationEnabled = await this.featureFlagService.isFeatureEnabled(
-      FeatureFlagKey.IsNewRelationEnabled,
-      workspaceId,
-    );
-
     if (inputPayload.isActive !== undefined) {
       // For new relation system, the active status is stitched to the field metadata
       if (!isNewRelationEnabled) {