Fix out-of-order M0 after SD printing

Fixes #14774

Co-Authored-By: tol2cj <tol2cj@users.noreply.github.com>

Marlin/src/gcode/queue.cpp

@@ -536,7 +536,7 @@ void GCodeQueue::get_serial_commands() {
             #if ENABLED(PRINTER_EVENT_LEDS)
               printerEventLEDs.onPrintCompleted();
               #if HAS_RESUME_CONTINUE
-                inject_P(PSTR("M0 Q S"
+                enqueue_now_P(PSTR("M0 Q S"
                   #if HAS_LCD_MENU
                     "1800"
                   #else
@@ -544,7 +544,7 @@ void GCodeQueue::get_serial_commands() {
                   #endif
                 ));
               #endif
-            #endif // PRINTER_EVENT_LEDS
+            #endif
           }
         }
         else if (n < 0)