Fix bluetooth iOS issue (device auto switches from Bluetooth to speaker) (#3388)

* fix ios bluetooth

Signed-off-by: Timo K <toger5@hotmail.de>

* fix lints

Signed-off-by: Timo K <toger5@hotmail.de>

---------

Signed-off-by: Timo K <toger5@hotmail.de>

src/livekit/useLivekit.ts

@@ -320,16 +320,18 @@ export function useLivekit(
 
   useEffect(() => {
     // Sync the requested devices with LiveKit's devices
-    if (
-      room !== undefined &&
-      connectionState === ConnectionState.Connected &&
-      !controlledAudioDevices
-    ) {
+    if (room !== undefined && connectionState === ConnectionState.Connected) {
       const syncDevice = (
         kind: MediaDeviceKind,
         selected$: Observable<SelectedDevice | undefined>,
       ): Subscription =>
         selected$.subscribe((device) => {
+          logger.info(
+            "[LivekitRoom] syncDevice room.getActiveDevice(kind) !== d.id :",
+            room.getActiveDevice(kind),
+            " !== ",
+            device?.id,
+          );
           if (
             device !== undefined &&
             room.getActiveDevice(kind) !== device.id
@@ -344,7 +346,9 @@ export function useLivekit(
 
       const subscriptions = [
         syncDevice("audioinput", devices.audioInput.selected$),
-        syncDevice("audiooutput", devices.audioOutput.selected$),
+        !controlledAudioDevices
+          ? syncDevice("audiooutput", devices.audioOutput.selected$)
+          : undefined,
         syncDevice("videoinput", devices.videoInput.selected$),
         // Restart the audio input track whenever we detect that the active media
         // device has changed to refer to a different hardware device. We do this
@@ -384,7 +388,7 @@ export function useLivekit(
       ];
 
       return (): void => {
-        for (const s of subscriptions) s.unsubscribe();
+        for (const s of subscriptions) s?.unsubscribe();
       };
     }
   }, [room, devices, connectionState, controlledAudioDevices]);