## Fixes
Fixes#22504
## Description
This PR fixes a bug where metadata updates (like creating a new field or
a page layout) were missed if an open tab was temporarily disconnected
from the server (e.g., tab backgrounded or a network blip).
Because the frontend's metadata store relies on live SSE deltas for
freshness, any gap in the connection meant the new metadata would never
reach the client unless a full reload occurred. This often resulted in
"No Data" states for newly created layouts or widgets.
**Changes:**
- Updated `SSEClientEffect.tsx` to call `invalidateMetadataStore()` upon
a successful SSE reconnection.
- Re-syncing the metadata store on reconnect ensures that any events
missed during the disconnected gap are retrieved durably without
requiring a manual page refresh.
## Testing
1. Open a record page tab in a workspace.
2. From an app front component or DevTools, trigger a field creation via
the metadata API (`createOneField` / `page-layout` mutations).
3. Briefly disconnect the network or restart the server so the SSE
stream drops during the mutation.
4. Re-establish the connection.
5. The tab should automatically refetch the metadata and reflect the new
field/layout without needing a manual reload, instead of getting stuck
in a "No Data" state.
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Akash!
18b746d525
