Fix Watch page crash: import getQueue

getQueue was called on the watch page but missing from the import list,
causing a ReferenceError that broke the entire /watch/:id route.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

frontend/src/pages/Watch.jsx

@@ -6,7 +6,7 @@ import {
   followChannelByUrl, toggleQueue, toggleLike, getChannelVideos, getChannel,
   getSettings, updateSettings, getRelatedVideos, getDownloads, rateVideo,
   getBookmarks, createBookmark, updateBookmark, deleteBookmark, importChapters, clearChapters,
-  getCollections, addToCollection,
+  getCollections, addToCollection, getQueue,
 } from "../api";
 import VideoCard from "../components/VideoCard";