More advanced pause tweaks (#12356)

* Followup to LCD_TIMEOUT_TO_STATUS=0
* Make continuous purge screen fit 20x4
* Unify purge message modes
* Preserve last-set pause header mode

Marlin/src/lcd/menu/menu_job_recovery.cpp

@@ -95,7 +95,7 @@ static void lcd_power_loss_recovery_cancel() {
 }
 
 void menu_job_recovery() {
-  defer_return_to_status = true;
+  set_defer_return_to_status(true);
   START_MENU();
   STATIC_ITEM(MSG_POWER_LOSS_RECOVERY);
   MENU_ITEM(function, MSG_RESUME_PRINT, lcd_power_loss_recovery_resume);