Capture state changes before useSelect subscription

In the event that a child component dispatched an action modifying the
store, the changes in the store were lost due to `useSelect`'s
`useIsomorphicLayoutEffect` referencing a stale value.

This change ensures the `useIsomorphicLayoutEffect` references the
latest `mapOutput` when setting the related `latestMapOutput.current`
value.

packages/data/src/components/use-select/index.js

@@ -186,7 +186,7 @@ export default function useSelect( mapSelect, deps ) {
 			latestIsAsync.current = isAsync;
 			renderQueue.flush( queueContext );
 		}
-	} );
+	}, [ mapOutput ] );
 
 	useIsomorphicLayoutEffect( () => {
 		if ( ! hasMappingFunction ) {