Add syncable NavigationMenuItem entity to core schema (#17232)

Implements a new syncable `navigationMenuItem` entity in the core schema
to replace the workspace `favorite` entity.

## Next Steps
- Frontend integration ([separate
PR](https://github.com/twentyhq/twenty/pull/17268))
- Data migration (separate PR)

packages/twenty-server/src/engine/metadata-modules/flat-entity/utils/__tests__/__snapshots__/get-metadata-related-metadata-names.util.spec.ts.snap

@@ -38,6 +38,13 @@ exports[`getMetadataRelatedMetadataNames should return related metadata names fo
 ]
 `;
 
+exports[`getMetadataRelatedMetadataNames should return related metadata names for navigationMenuItem 1`] = `
+[
+  "objectMetadata",
+  "navigationMenuItem",
+]
+`;
+
 exports[`getMetadataRelatedMetadataNames should return related metadata names for objectMetadata 1`] = `
 [
   "fieldMetadata",

packages/twenty-server/src/engine/metadata-modules/flat-entity/utils/__tests__/__snapshots__/sort-metadata-names-children-first.util.spec.ts.snap

@@ -1,9 +1,10 @@
-// Jest Snapshot v1, https://jestjs.io/docs/snapshot-testing
+// Jest Snapshot v1, https://goo.gl/fbAQLP
 
 exports[`sortMetadataNamesChildrenFirst should return metadata names sorted with children first (most manyToOne relations first) 1`] = `
 [
   "rowLevelPermissionPredicate",
   "viewFilter",
+  "navigationMenuItem",
   "pageLayoutWidget",
   "viewField",
   "commandMenuItem",