Merge pull request #543 from pangeachat/audio-allow-activity

Enables activity tab on audio toolbar

lib/pangea/enum/message_mode_enum.dart

@@ -71,12 +71,11 @@ extension MessageModeExtension on MessageMode {
     switch (this) {
       case MessageMode.translation:
       case MessageMode.textToSpeech:
-      case MessageMode.practiceActivity:
       case MessageMode.definition:
         return event.messageType == MessageTypes.Text;
       case MessageMode.speechToText:
         return event.messageType == MessageTypes.Audio;
-      default:
+      case MessageMode.practiceActivity:
         return true;
     }
   }