Disabled settings while alarm is active.

Dif this to avoid weird behavior that can happen if changed during alarm active state. This also remove the need to handle those in code.

src/displayapp/screens/Sleep.cpp

@@ -366,6 +366,14 @@ void Sleep::DrawSettingsScreen() {
   // lv_label_set_text_static(lblSettings, "Settings");
   // lv_obj_align(lblSettings, lv_scr_act(), LV_ALIGN_IN_TOP_MID, 0, 10);
 
+  if (infiniSleepController.wakeAlarm.isEnabled) {
+    lv_obj_t* lblWarning = lv_label_create(lv_scr_act(), nullptr);
+    lv_label_set_text_static(lblWarning, "Disable alarm to\nchange settings.");
+    lv_obj_align(lblWarning, lv_scr_act(), LV_ALIGN_CENTER, 0, 0);
+    lv_obj_set_style_local_text_color(lblWarning, LV_LABEL_PART_MAIN, LV_STATE_DEFAULT, LV_COLOR_RED);
+    return;
+  }
+
   int y_offset = 10;
 
   lv_obj_t* lblWakeMode = lv_label_create(lv_scr_act(), nullptr);