Add confidence default to avoid unnecessary field causing issues

we already end in-progress audio events when we disable a camera, but this mirrors that logic for specifically disabling audio detection

frigate/embeddings/__init__.py

@@ -4,7 +4,6 @@ import base64
 import json
 import logging
 import os
-import sys
 import threading
 from json.decoder import JSONDecodeError
 from multiprocessing.synchronize import Event as MpEvent
@@ -53,14 +52,6 @@ class EmbeddingProcess(FrigateProcess):
             self.stop_event,
         )
         maintainer.start()
-        maintainer.join()
-
-        # If the maintainer thread exited but no shutdown was requested, it
-        # crashed. Surface as a non-zero exit so the watchdog restarts us
-        # instead of treating the silent thread death as a clean shutdown.
-        if not self.stop_event.is_set():
-            logger.error("Embeddings maintainer thread exited unexpectedly")
-            sys.exit(1)
 
 
 class EmbeddingsContext:

frigate/watchdog.py

@@ -28,7 +28,6 @@ class MonitoredProcess:
     restart_timestamps: deque[float] = field(
         default_factory=lambda: deque(maxlen=MAX_RESTARTS)
     )
-    clean_exit_logged: bool = False
 
     def is_restarting_too_fast(self, now: float) -> bool:
         while (
@@ -73,9 +72,7 @@ class FrigateWatchdog(threading.Thread):
 
         exitcode = entry.process.exitcode
         if exitcode == 0:
-            if not entry.clean_exit_logged:
-                logger.info("Process %s exited cleanly, not restarting", entry.name)
-                entry.clean_exit_logged = True
+            logger.info("Process %s exited cleanly, not restarting", entry.name)
             return
 
         logger.warning(