fix(arq): Never capture control flow exceptions (#6507)

Return early when `scope.transaction` is `None`, matching the existing behavior when there is a transaction on the scope.

Author: alexander-alderman-webb

sentry_sdk/integrations/arq.py

@@ -118,6 +118,9 @@ def _capture_exception(exc_info: "ExcInfo") -> None:
 
         scope.transaction.set_status(SPANSTATUS.INTERNAL_ERROR)
 
+    if exc_info[0] in ARQ_CONTROL_FLOW_EXCEPTIONS:
+        return
+
     event, hint = event_from_exception(
         exc_info,
         client_options=sentry_sdk.get_client().options,