fix: Don't call RegisterClientMessages every scene change (#1865)

Assets/Mirror/Runtime/NetworkManager.cs

@@ -995,19 +995,14 @@ void FinishLoadSceneHost()
                 // call OnServerSceneChanged
                 OnServerSceneChanged(networkSceneName);
 
-                if (NetworkClient.isConnected)
-                {
-                    RegisterClientMessages();
-
-                    // DO NOT call OnClientSceneChanged here.
-                    // the scene change happened because StartHost loaded the
-                    // server's online scene. it has nothing to do with the client.
-                    // this was not meant as a client scene load, so don't call it.
-                    //
-                    // otherwise AddPlayer would be called twice:
-                    // -> once for client OnConnected
-                    // -> once in OnClientSceneChanged
-                }
+                // DO NOT call OnClientSceneChanged here.
+                // the scene change happened because StartHost loaded the
+                // server's online scene. it has nothing to do with the client.
+                // this was not meant as a client scene load, so don't call it.
+                //
+                // otherwise AddPlayer would be called twice:
+                // -> once for client OnConnected
+                // -> once in OnClientSceneChanged
             }
             // otherwise we just changed a scene in host mode
             else
@@ -1020,8 +1015,6 @@ void FinishLoadSceneHost()
 
                 if (NetworkClient.isConnected)
                 {
-                    RegisterClientMessages();
-
                     // let client know that we changed scene
                     OnClientSceneChanged(NetworkClient.connection);
                 }