Add missing __unstableSetEditorMode to useZoomOut useEffect dependency

Co-authored-by: Dave Smith <getdavemail@gmail.com>

packages/block-editor/src/hooks/use-zoom-out.js

@@ -42,5 +42,5 @@ export function useZoomOut( zoomOut = true ) {
 		} else if ( ! zoomOut && originalEditingMode.current !== mode ) {
 			__unstableSetEditorMode( originalEditingMode.current );
 		}
-	}, [ zoomOut, mode ] );
+	}, [ __unstableSetEditorMode, zoomOut, mode ] );
 }