fix: replace bare except clauses with specific exception types

Bare `except:` clauses catch KeyboardInterrupt and SystemExit, which
prevents proper Celery worker shutdown and can cause processes to hang.

- `utils.py`: uuid.UUID() raises ValueError on invalid input, so catch
  (ValueError, AttributeError) instead of bare except
- `base_tool_node.py`: json.loads() raises JSONDecodeError on invalid
  JSON, so catch (json.JSONDecodeError, TypeError, ValueError) instead

Fixes #5065

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: easonysliu

apps/application/flow/step_node/tool_node/impl/base_tool_node.py

@@ -51,7 +51,7 @@ def valid_reference_value(_type, value, name):
             raise Exception(_(
                 'Field: {name} Type: {_type} Value: {value} Unsupported types'
             ).format(name=name, _type=_type))
-    except:
+    except (json.JSONDecodeError, TypeError, ValueError):
         return value
     if not isinstance(value, instance_type):
         raise Exception(_(

apps/ops/celery/utils.py

@@ -42,7 +42,7 @@ def get_task_log_path(base_path, task_id, level=2):
     task_id = str(task_id)
     try:
         uuid.UUID(task_id)
-    except:
+    except (ValueError, AttributeError):
         return os.path.join(PROJECT_DIR, 'data', 'caution.txt')
 
     rel_path = os.path.join(*task_id[:level], task_id + '.log')