DisplayApp: Go to clock on wakeup if no app loaded

When waking the screen up, if there is no actual app loaded (i.e. we are
still in the QuickSettings, Settings, or Launcher screens) we should
just reload the Clock app directly.

src/displayapp/DisplayApp.cpp

@@ -252,6 +252,9 @@ void DisplayApp::Refresh() {
         lv_disp_trig_activity(nullptr);
         ApplyBrightness();
         state = States::Running;
+        if (currentApp == Apps::Launcher || currentApp == Apps::QuickSettings || currentApp == Apps::Settings) {
+          LoadScreen(Apps::Clock, DisplayApp::FullRefreshDirections::None);
+        }
         break;
       case Messages::UpdateBleConnection:
         //        clockScreen.SetBleConnectionState(bleController.IsConnected() ? Screens::Clock::BleConnectionStates::Connected :