Improve filament runout handling in FTDI EVE Touch UI

- On filament runout, take the user to the tune menu where they can initiate a filament change or resume the print.

Marlin/src/lcd/extui/lib/ftdi_eve_touch_ui/screens/confirm_user_request_alert_box.cpp

@@ -36,8 +36,15 @@ void ConfirmUserRequestAlertBox::onRedraw(draw_mode_t mode) {
 bool ConfirmUserRequestAlertBox::onTouchEnd(uint8_t tag) {
   switch (tag) {
     case 1:
-      ExtUI::setUserConfirmed();
-      GOTO_PREVIOUS();
+      if (ExtUI::isPrintingPaused()) {
+        // The TuneMenu will call ExtUI::setUserConfirmed()
+        GOTO_SCREEN(TuneMenu);
+        current_screen.forget();
+      }
+      else {
+        ExtUI::setUserConfirmed();
+        GOTO_PREVIOUS();
+      }
       return true;
     case 2: GOTO_PREVIOUS(); return true;
     default:                 return false;

Marlin/src/lcd/extui/lib/ftdi_eve_touch_ui/screens/tune_menu.cpp

@@ -143,7 +143,9 @@ void TuneMenu::pausePrint() {
 
 void TuneMenu::resumePrint() {
   sound.play(twinkle, PLAY_ASYNCHRONOUS);
-  if (ExtUI::isPrintingFromMedia())
+  if (ExtUI::awaitingUserConfirm())
+    ExtUI::setUserConfirmed();
+  else if (ExtUI::isPrintingFromMedia())
     ExtUI::resumePrint();
   #ifdef ACTION_ON_RESUME
     else host_action_resume();