Deprecate IS_RECORD_TABLE_WIDGET_ENABLED feature flag (#19662)

## Summary
- Removes the `IS_RECORD_TABLE_WIDGET_ENABLED` feature flag, making the
record table widget unconditionally available in dashboard widget type
selection
- The flag was already seeded as `true` for all new workspaces and only
gated UI visibility in one component
(`SidePanelPageLayoutDashboardWidgetTypeSelect`)
- Cleans up the flag from `FeatureFlagKey` enum, dev seeder, and test
mocks

## Analysis
The flag only controlled whether the "View" (Record Table) widget option
appeared in the dashboard widget type selector. The entire record table
widget infrastructure (rendering, creation hooks, GraphQL types,
`RECORD_TABLE` enum in `WidgetType`) is independent of the flag and
fully implemented. No backend logic depends on this flag.

---------

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
Co-authored-by: Charles Bochet <charles@twenty.com>

.github/workflows/ci-zapier.yaml

@@ -69,13 +69,14 @@ jobs:
 
       - name: Server / Start
         run: |
-          npx nx start twenty-server &
+          npx nx run twenty-server:start:ci &
           echo "Waiting for server to be ready..."
-          timeout 60 bash -c 'until curl -s http://localhost:3000/health; do sleep 2; done'
+          timeout 60 bash -c 'until curl -sf http://localhost:3000/healthz; do sleep 2; done'
 
       - name: Start worker
+        working-directory: packages/twenty-server
         run: |
-          npx nx run twenty-server:worker &
+          NODE_ENV=development node dist/queue-worker/queue-worker.js &
           echo "Worker started"
 
       - name: Zapier / Build