fix: tolerate QMP socket removal during status probes

hydra/runtime.py

@@ -182,9 +182,11 @@ class Runtime:
             raise RuntimeError(f'Cannot verify VM identity: {exc}') from exc
 
     def _listening(self, path: Path) -> bool:
-        if not path.exists():
+        try:
+            mode = path.lstat().st_mode
+        except FileNotFoundError:
             return False
-        if not stat.S_ISSOCK(path.lstat().st_mode):
+        if not stat.S_ISSOCK(mode):
             raise RuntimeError(f'Refusing non-socket runtime path: {path}')
         with socket.socket(socket.AF_UNIX) as probe:
             probe.settimeout(min(1, self.boot_timeout))