Fix up pausing / parking display (#17460)

Marlin/src/lcd/menu/menu_ubl.cpp

@@ -51,7 +51,7 @@ float mesh_edit_value, mesh_edit_accumulator; // We round mesh_edit_value to 2.5
                                               // separate value that doesn't lose precision.
 static int16_t ubl_encoderPosition = 0;
 
-static void _lcd_mesh_fine_tune(PGM_P msg) {
+static void _lcd_mesh_fine_tune(PGM_P const msg) {
   ui.defer_status_screen();
   if (ubl.encoder_diff) {
     ubl_encoderPosition = (ubl.encoder_diff > 0) ? 1 : -1;
@@ -74,12 +74,13 @@ static void _lcd_mesh_fine_tune(PGM_P msg) {
   }
 }
 
-void _lcd_mesh_edit_NOP() {
+void lcd_limbo() {
+  ui.currentScreen = []{};
   ui.defer_status_screen();
 }
 
 float lcd_mesh_edit() {
-  ui.goto_screen(_lcd_mesh_edit_NOP);
+  lcd_limbo();
   ui.refresh(LCDVIEW_CALL_REDRAW_NEXT);
   _lcd_mesh_fine_tune(GET_TEXT(MSG_MESH_EDITOR));
   return mesh_edit_value;
@@ -87,7 +88,7 @@ float lcd_mesh_edit() {
 
 void lcd_mesh_edit_setup(const float &initial) {
   mesh_edit_value = mesh_edit_accumulator = initial;
-  ui.goto_screen(_lcd_mesh_edit_NOP);
+  lcd_limbo();
 }
 
 void _lcd_z_offset_edit() {
@@ -437,10 +438,9 @@ void ubl_map_move_to_xy() {
 void set_current_from_steppers_for_axis(const AxisEnum axis);
 void sync_plan_position();
 
-void _lcd_do_nothing() {}
 void _lcd_hard_stop() {
   const screenFunc_t old_screen = ui.currentScreen;
-  ui.currentScreen = _lcd_do_nothing;
+  lcd_limbo();
   planner.quick_stop();
   ui.currentScreen = old_screen;
   set_current_from_steppers_for_axis(ALL_AXES);