fix(iFrame): Add 'speaker-selection' to the allow list.

This is needed for Firefox 116 and above for setSinkId to succeed.

modules/API/external/external_api.js

@@ -420,7 +420,8 @@ export default class JitsiMeetExternalAPI extends EventEmitter {
             'display-capture',
             'hid',
             'microphone',
-            'screen-wake-lock'
+            'screen-wake-lock',
+            'speaker-selection'
         ].join('; ');
         this._frame.name = frameName;
         this._frame.id = frameName;