Remove Favorite and FavoriteFolder from workspace schema (#19536)

## Summary

- Removes all workspace schema definitions for `Favorite` and
`FavoriteFolder` entities, which have been fully migrated to
`NavigationMenuItems`
- Deletes 26 standalone files including workspace entities, NestJS
modules, services, listeners, jobs, standard application builders (field
metadata, views, view fields, view field groups, indexes, page layouts),
mocks, and integration tests
- Cleans up ~40 modified files: removes `favorites` relation from 10
workspace entities and their field metadata utils, removes entries from
all builder maps, shared constants (`STANDARD_OBJECTS`,
`CoreObjectNameSingular`, `DEFAULT_RELATIONS_OBJECTS_STANDARD_IDS`), SDK
default relations, AI tool filtering, and standard object icons

packages/twenty-server/src/engine/core-modules/tool-provider/providers/database-tool.provider.ts

@@ -26,7 +26,6 @@ import {
 import { ToolCategory } from 'twenty-shared/ai';
 import { type ToolDescriptor } from 'src/engine/core-modules/tool-provider/types/tool-descriptor.type';
 import { type ToolIndexEntry } from 'src/engine/core-modules/tool-provider/types/tool-index-entry.type';
-import { isFavoriteRelatedObject } from 'src/engine/metadata-modules/ai/ai-agent/utils/is-favorite-related-object.util';
 import { isWorkflowRelatedObject } from 'src/engine/metadata-modules/ai/ai-agent/utils/is-workflow-related-object.util';
 import { WorkspaceManyOrAllFlatEntityMapsCacheService } from 'src/engine/metadata-modules/flat-entity/services/workspace-many-or-all-flat-entity-maps-cache.service';
 import { computePermissionIntersection } from 'src/engine/twenty-orm/utils/compute-permission-intersection.util';
@@ -81,10 +80,7 @@ export class DatabaseToolProvider implements ToolProvider {
       .filter((obj) => obj.isActive);
 
     for (const flatObject of allFlatObjects) {
-      if (
-        isWorkflowRelatedObject(flatObject) ||
-        isFavoriteRelatedObject(flatObject)
-      ) {
+      if (isWorkflowRelatedObject(flatObject)) {
         continue;
       }