UI improvements (#11429)

* Respect classname when no preview is found

* Don't check for go2rtc info if camera is not restramed

* Show error banner when playback fails

* Add keyboard shortcut for fullscreen

web/src/components/player/PreviewPlayer.tsx

@@ -82,7 +82,12 @@ export default function PreviewPlayer({
   }
 
   return (
-    <div className="flex size-full items-center justify-center rounded-lg text-white md:rounded-2xl">
+    <div
+      className={cn(
+        "flex size-full items-center justify-center rounded-lg text-white md:rounded-2xl",
+        className,
+      )}
+    >
       No Preview Found
     </div>
   );