feat(ui): alerts display depending on current generation destination

invokeai/frontend/web/src/features/queue/hooks/useCurrentDestination.ts

@@ -0,0 +1,12 @@
+import { useGetCurrentQueueItemQuery } from "services/api/endpoints/queue";
+
+
+export const useCurrentDestination = () => {
+  const { destination } = useGetCurrentQueueItemQuery(undefined, {
+    selectFromResult: ({ data }) => ({
+      destination: data ? data.destination : null,
+    }),
+  });
+
+  return destination;
+};