Enable RUF013 to enforce optional typing (#37266)

* Enable RUF013 for Optional typing

Signed-off-by: cyy <cyyever@outlook.com>

* Add Optional to types

* Format code

Signed-off-by: cyy <cyyever@outlook.com>

---------

Signed-off-by: cyy <cyyever@outlook.com>

pyproject.toml

@@ -20,7 +20,9 @@ line-length = 119
 [tool.ruff.lint]
 # Never enforce `E501` (line length violations).
 ignore = ["C901", "E501", "E741", "F402", "F823" ]
-select = ["C", "E", "F", "I", "W"]
+# RUF013: Checks for the use of implicit Optional
+#  in type annotations when the default parameter value is None.
+select = ["C", "E", "F", "I", "W", "RUF013"]
 
 # Ignore import violations in all `__init__.py` files.
 [tool.ruff.lint.per-file-ignores]