Fix print_job_timer to print_job_counter

MK/module/temperature/temperature.cpp

@@ -1663,7 +1663,7 @@ void disable_all_coolers() {
    setTargetCooler(0);
 
    // if cooler go down the print job is stopped 
-   print_job_timer.stop();
+   print_job_counter.stop();
 
    #if ENABLED(LASER)
       // No laser firing with no coolers running! (paranoia)