## Context
Reported in production on `engineering.twenty.com` — standalone page
layouts (e.g. "Release overview") crash with the React error boundary
fallback ("Sorry, something went wrong"). The console shows:
```
Error: useTargetRecord must be used within a record page context (targetRecordIdentifier is required)
```
The minified stack trace points at `SidePanelToggleButto…`, but that's
just the bundle chunk name — the actual call site is
`PageLayoutTabsRenderer`.
## Root cause
#19296 added an unconditional `useTargetRecord()` call inside
`PageLayoutTabsRenderer` so it could read the target object's metadata
and hide tabs whose widgets reference deactivated relations:
```ts
const targetRecord = useTargetRecord();
const { objectMetadataItem } = useObjectMetadataItem({
objectNameSingular: targetRecord.targetObjectNameSingular,
});
```
But `PageLayoutTabsRenderer` runs on **both** record pages and
standalone pages. On standalone pages, `StandalonePageLayoutPage`
intentionally sets `targetRecordIdentifier: undefined` in
`LayoutRenderingProvider`, which makes `useTargetRecord()` throw — and
the follow-up `useObjectMetadataItem()` would also throw on miss.
