🐛 Fix M140 print job timer autostart (#22046)

Marlin/src/gcode/temp/M140_M190.cpp

@@ -83,10 +83,11 @@ void GcodeSuite::M140_M190(const bool isM190) {
 
   thermalManager.setTargetBed(temp);
 
-  TERN_(PRINTJOB_TIMER_AUTOSTART, thermalManager.auto_job_check_timer(true, false));
-
   ui.set_status_P(thermalManager.isHeatingBed() ? GET_TEXT(MSG_BED_HEATING) : GET_TEXT(MSG_BED_COOLING));
 
+  // with PRINTJOB_TIMER_AUTOSTART, M190 can start the timer, and M140 can stop it
+  TERN_(PRINTJOB_TIMER_AUTOSTART, thermalManager.auto_job_check_timer(isM190, !isM190));
+
   if (isM190)
     thermalManager.wait_for_bed(no_wait_for_cooling);
 }