fix: invalidate rolesPermissions cache + add Docker Hub auth to CI (#19044)

## Summary

### Cache invalidation fix
- After migrating object/field permissions to syncable entities (#18609,
#18751, #18567), changes to `flatObjectPermissionMaps`,
`flatFieldPermissionMaps`, or `flatPermissionFlagMaps` no longer
triggered `rolesPermissions` cache invalidation
- This caused stale permission data to be served, leading to flaky
`permissions-on-relations` integration tests and potentially incorrect
permission enforcement in production after object permission upserts
- Adds the three permission-related flat map keys to the condition that
triggers `rolesPermissions` cache recomputation in
`WorkspaceMigrationRunnerService.getLegacyCacheInvalidationPromises`
- Clears memoizer after recomputation to prevent concurrent
`getOrRecompute` calls from caching stale data

### Docker Hub rate limit fix
- CI service containers (postgres, redis, clickhouse) and `docker
run`/`docker build` steps were pulling from Docker Hub
**unauthenticated**, hitting the 100-pull-per-6-hour rate limit on
shared GitHub-hosted runner IPs
- Adds `credentials` blocks to all service container definitions and
`docker/login-action` steps before `docker run`/`docker compose`
commands
- Uses `vars.DOCKERHUB_USERNAME` + `secrets.DOCKERHUB_PASSWORD`
(matching the existing twenty-infra convention)
- Affected workflows: ci-server, ci-merge-queue, ci-breaking-changes,
ci-zapier, ci-sdk, ci-create-app-e2e, ci-website,
ci-test-docker-compose, preview-env-keepalive, spawn-twenty-docker-image
action

.github/workflows/ci-test-docker-compose.yaml

@@ -27,6 +27,11 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v4
+      - name: Login to Docker Hub
+        uses: docker/login-action@v3
+        with:
+          username: ${{ vars.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_PASSWORD }}
       - name: Run compose
         run: |
           echo "Patching docker-compose.yml..."
@@ -97,6 +102,11 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v4
+      - name: Login to Docker Hub
+        uses: docker/login-action@v3
+        with:
+          username: ${{ vars.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_PASSWORD }}
       - name: Create frontend placeholder
         run: |
           mkdir -p packages/twenty-front/build