fix: suppress only baton error

src/aare/daq/server_exception_handler.py

@@ -36,6 +36,7 @@ from aarecommon.errors.exception_handler import (
     AareUserError,
     AuthenticationException,
     AutomationError,
+    UserRightsException,
 )
 from fastapi import HTTPException
 from fastapi import status as api_status
@@ -171,6 +172,12 @@ def register_exception_handlers(app) -> None:
                 else api_status.HTTP_403_FORBIDDEN
             )
         body = _error_body(exc, code_override=code_override)
+        # TODO: migrate baton to its own error type
+        if isinstance(exc, UserRightsException):
+            if "do not hold the baton" in exc.message:
+                return JSONResponse(
+                    status_code=status, content=body, headers=getattr(exc, "headers", None)
+                )
         logger.warning(
             "AareAuthError: %s",
             body["message"],