[Chore/Refactor] Switch from MyPy to Basedpyright for type checking (#25047)

Signed-off-by: -LAN- <laipz8200@outlook.com>

api/models/dataset.py

@@ -915,7 +915,7 @@ class DatasetKeywordTable(Base):
                 if keyword_table_text:
                     return json.loads(keyword_table_text.decode("utf-8"), cls=SetDecoder)
                 return None
-            except Exception as e:
+            except Exception:
                 logger.exception("Failed to load keyword table from file: %s", file_key)
                 return None