Implement custom delay/millis for EXTENSIBLE_UI (#12188)

Marlin/src/Marlin.cpp

@@ -617,9 +617,7 @@ void kill(PGM_P const lcd_msg/*=NULL*/) {
   SERIAL_ERROR_START();
   SERIAL_ERRORLNPGM(MSG_ERR_KILLED);
 
-  #if ENABLED(EXTENSIBLE_UI)
-    UI::onPrinterKilled(lcd_msg ? lcd_msg : PSTR(MSG_KILLED));
-  #elif ENABLED(ULTRA_LCD)
+  #if ENABLED(ULTRA_LCD) || ENABLED(EXTENSIBLE_UI)
     kill_screen(lcd_msg ? lcd_msg : PSTR(MSG_KILLED));
   #else
     UNUSED(lcd_msg);