fix: use os._exit to exit process in scheduler watcher thread

scheduler_watcher.py

@@ -1,4 +1,5 @@
 import datetime
+import os
 import threading
 import time
 from module.logger import logger
@@ -95,7 +96,7 @@ class SchedulerWatcher:
                             title=f"Alas <{self.alas_obj.config_name}>: Scheduler Stuck",
                             content=f"Task {self.current_task} reached final time limit, assuming the scheduler is stuck",
                         )
-                    exit(-1)
+                    os._exit(-1)
 
     @staticmethod
     def get_instance() -> "SchedulerWatcher":