fix(mumble): fix reinitializing clients when audio device is set

`HandleClientConnect` expects the `MumbleUser` to hae a valid username and session, but this was only sending the session id, so the audio sink was getting set to an empty user name, resulting in the client never being able to hear anyone until they turned off their voice chat and turned it back on (or got lucky enough that their internet was slow, or initialization was slow and that this wouldn't get hit).

code/components/voip-mumble/src/MumbleAudioOutput.cpp

@@ -1499,28 +1499,17 @@ void MumbleAudioOutput::SetAudioDevice(const std::string& deviceId)
 
 	{
 		std::unique_lock<std::shared_mutex> _(m_clientsMutex);
-
-		for (auto& client : m_clients)
-		{
-			if (client.second)
-			{
-				m_ids.push_back(client.first);
-			}
-		}
-
 		// delete all clients
 		m_clients.clear();
 	}
 
 	// reinitialize audio device
 	InitializeAudioDevice();
 
-	// recreate clients
-	for (auto& client : m_ids)
+	m_client->GetState().ForAllUsers([this](const std::shared_ptr<MumbleUser>& user)
 	{
-		MumbleUser fakeUser(client);
-		HandleClientConnect(fakeUser);
-	}
+		HandleClientConnect(*user);
+	});
 }
 
 void MumbleAudioOutput::SetDistance(float distance)