fix layout mode click when discussion is activated

front/src/Phaser/Game/GameScene.ts

@@ -643,6 +643,10 @@ export class GameScene extends ResizableScene implements CenterListener {
     }
 
     private switchLayoutMode(): void {
+        //if discussion is activated, this layout cannot be activated
+        if(mediaManager.activatedDiscussion){
+            return;
+        }
         const mode = layoutManager.getLayoutMode();
         if (mode === LayoutMode.Presentation) {
             layoutManager.switchLayoutMode(LayoutMode.VideoChat);

front/src/WebRtc/DiscussionManager.ts

@@ -173,4 +173,7 @@ export class DiscussionManager {
         this.sendMessageCallBack.set(userId, callback);
     }
 
+    get activatedDiscussion(){
+        return this.activeDiscussion;
+    }
 }

front/src/WebRtc/MediaManager.ts

@@ -582,6 +582,10 @@ export class MediaManager {
     public addSendMessageCallback(userId: string|number, callback: SendMessageCallback){
         this.discussionManager.onSendMessageCallback(userId, callback)
     }
+
+    get activatedDiscussion(){
+        return this.discussionManager.activatedDiscussion;
+    }
 }
 
 export const mediaManager = new MediaManager();