Migrate pagelayout position frontend (#18229)

## Context
Part 1 of migrating gridPosition in favor of typed position
FE should now always send both values to the BE and use both.

Next steps: 
- Update the backend to enforce and validate the new position field + DB
migrations gridPositon -> position (type: GRID)
- Cleanup frontend usage
- Cleanup backend

packages/twenty-server/src/engine/metadata-modules/flat-front-component/services/workspace-flat-front-component-map-cache.service.ts

@@ -30,6 +30,7 @@ export class WorkspaceFlatFrontComponentMapCacheService extends WorkspaceCachePr
     const [frontComponents, applications] = await Promise.all([
       this.frontComponentRepository.find({
         where: { workspaceId },
+        withDeleted: true,
       }),
       this.applicationRepository.find({
         where: { workspaceId },