Integrate NavigationMenuItem with feature flag support (#17268)

## Implement Navigation Menu Items Frontend

Implements the frontend for navigation menu items, the new system
replacing favorites.

### Changes
- Added GraphQL fragments and queries for navigation menu items
- Added hooks for managing navigation menu items (create, update,
delete, sorting, filtering)
- Updated components to use navigation menu items instead of favorites
- Added test coverage for utility functions

### Migration Note
The favorites and navigation menu item modules currently exist in
parallel. The favorites code will be removed once all data has been
migrated to navigation menu items.

<!-- CURSOR_SUMMARY -->
---

> [!NOTE]
> Replaces Favorites with feature-flagged `NavigationMenuItem` across
frontend and backend, while keeping Favorites as fallback until
migration completes.
> 
> - UI: new `navigation-menu-item` components (folders, orphan items,
drag provider/droppable, icons, skeleton), dispatcher components to
switch from Favorites, and updated “Add to favorites” action to create
`NavigationMenuItem` when `IS_NAVIGATION_MENU_ITEM_ENABLED`
> - DnD: shared `validateAndExtractFolderId` and droppable id utils
moved to `ui/layout/draggable-list`; favorites DnD updated to use shared
utils
> - GraphQL (client): add fragments, queries, mutations, hooks
(create/update/delete/find), and generated types; added
`RecordIdentifier` and `targetRecordIdentifier` on `NavigationMenuItem`
> - Prefetch: new prefetch state/effect for navigation menu items; skip
favorites prefetch when flag enabled
> - Backend: add DTOs (`NavigationMenuItem`, `RecordIdentifier`),
resolver `targetRecordIdentifier` field, service logic to fetch record
identifiers with permission-aware access and image signing,
`getRecordImageIdentifier` util, entity relation to `view`, and
migration adding FK on `viewId`
> - Feature flags & seeding: add `IS_NAVIGATION_MENU_ITEM_ENABLED` to
enums, dev seeder enables it; standard app seeds workspace navigation
menu items instead of favorites when flag on
> - Tests: add unit tests for sorting/labels/folder id and related utils
> 
> <sup>Written by [Cursor
Bugbot](https://cursor.com/dashboard?tab=bugbot) for commit
c99746f08b9f84fc8cec4fcc3a7d7afb8ea92db7. This will update automatically
on new commits. Configure
[here](https://cursor.com/dashboard?tab=bugbot).</sup>
<!-- /CURSOR_SUMMARY -->

---------

Co-authored-by: Félix Malfait <felix.malfait@gmail.com>
Co-authored-by: Aman Raj <92664006+araj00@users.noreply.github.com>
Co-authored-by: Félix Malfait <felix@twenty.com>
Co-authored-by: Paul Rastoin <45004772+prastoin@users.noreply.github.com>
Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
Co-authored-by: github-actions <github-actions@twenty.com>

packages/twenty-front/src/generated/graphql.ts

@@ -1426,6 +1426,7 @@ export enum FeatureFlagKey {
   IS_FILES_FIELD_ENABLED = 'IS_FILES_FIELD_ENABLED',
   IS_JSON_FILTER_ENABLED = 'IS_JSON_FILTER_ENABLED',
   IS_JUNCTION_RELATIONS_ENABLED = 'IS_JUNCTION_RELATIONS_ENABLED',
+  IS_NAVIGATION_MENU_ITEM_ENABLED = 'IS_NAVIGATION_MENU_ITEM_ENABLED',
   IS_PUBLIC_DOMAIN_ENABLED = 'IS_PUBLIC_DOMAIN_ENABLED',
   IS_RECORD_PAGE_LAYOUT_ENABLED = 'IS_RECORD_PAGE_LAYOUT_ENABLED',
   IS_ROW_LEVEL_PERMISSION_PREDICATES_ENABLED = 'IS_ROW_LEVEL_PERMISSION_PREDICATES_ENABLED',
@@ -3066,6 +3067,7 @@ export type NavigationMenuItem = {
   position: Scalars['Float'];
   targetObjectMetadataId?: Maybe<Scalars['UUID']>;
   targetRecordId?: Maybe<Scalars['UUID']>;
+  targetRecordIdentifier?: Maybe<RecordIdentifier>;
   updatedAt: Scalars['DateTime'];
   userWorkspaceId?: Maybe<Scalars['UUID']>;
   viewId?: Maybe<Scalars['UUID']>;
@@ -3889,6 +3891,13 @@ export type RatioAggregateConfig = {
   optionValue: Scalars['String'];
 };
 
+export type RecordIdentifier = {
+  __typename?: 'RecordIdentifier';
+  id: Scalars['UUID'];
+  imageIdentifier?: Maybe<Scalars['String']>;
+  labelIdentifier: Scalars['String'];
+};
+
 export type Relation = {
   __typename?: 'Relation';
   sourceFieldMetadata: Field;