aod: fix brightness getting stuck high

src/displayapp/DisplayApp.cpp

@@ -238,9 +238,6 @@ void DisplayApp::Refresh() {
       case Messages::DimScreen:
         DimScreen();
         break;
-      case Messages::RestoreBrightness:
-        RestoreBrightness();
-        break;
       case Messages::GoToSleep:
         while (brightnessController.Level() != Controllers::BrightnessController::Levels::Low) {
           brightnessController.Lower();
@@ -257,6 +254,9 @@ void DisplayApp::Refresh() {
         PushMessageToSystemTask(Pinetime::System::Messages::OnDisplayTaskSleeping);
         state = States::Idle;
         break;
+      case Messages::NotifyDeviceActivity:
+        lv_disp_trig_activity(nullptr);
+        break;
       case Messages::GoToRunning:
         if (settingsController.GetAlwaysOnDisplay()) {
           lcd.LowPowerOff();

src/displayapp/Messages.h

@@ -18,7 +18,7 @@ namespace Pinetime {
         TimerDone,
         BleFirmwareUpdateStarted,
         DimScreen,
-        RestoreBrightness,
+        NotifyDeviceActivity,
         ShowPairingKey,
         AlarmTriggered,
         Chime,