Number serial from 1 to match settings

Marlin/src/lcd/extui/lib/mks_ui/draw_gcode.cpp

@@ -80,7 +80,7 @@ void lv_serial_capt_hook(void * userPointer, uint8_t c)
 void lv_eom_hook(void *)
 {
   // Message is done, let's remove the hook now
-  MYSERIAL0.setHook();
+  MYSERIAL1.setHook();
   // We are back from the keyboard, so let's redraw ourselves
   draw_return_ui();
 }

Marlin/src/lcd/extui/lib/mks_ui/draw_keyboard.cpp

@@ -164,7 +164,7 @@ static void lv_kb_event_cb(lv_obj_t *kb, lv_event_t event) {
         case GCodeCommand:
           if (!queue.ring_buffer.full(3)) {
             // Hook anything that goes to the serial port
-            MYSERIAL0.setHook(lv_serial_capt_hook, lv_eom_hook, 0);
+            MYSERIAL1.setHook(lv_serial_capt_hook, lv_eom_hook, 0);
             queue.enqueue_one_now(ret_ta_txt);
           }
           lv_clear_keyboard();