Enable the RUF036 lint in Ruff

.ruff.toml

@@ -251,7 +251,7 @@ select = [
     "RUF033",  # `__post_init__` method with argument defaults
     "RUF034",  # Useless `if`-`else` condition
     "RUF035",  # Unsafe use of `{name}` detected
-#    "RUF036",  # `None` not at the end of the type annotation.
+    "RUF036",  # `None` not at the end of the type annotation.
     "RUF038",  # `Literal[True, False, ...]` can be replaced with `Literal[...] | bool`
 #    "RUF039",  # First argument to {call} is not raw string
     "RUF040",  # Non-string literal used as assert message
@@ -367,7 +367,7 @@ select = [
 ]
 
 # these tests need old ``typing`` generic aliases
-"tests/test_util/test_util_typing.py" = ["UP006", "UP007", "UP035"]
+"tests/test_util/test_util_typing.py" = ["RUF036", "UP006", "UP007", "UP035"]
 "tests/test_util/typing_test_data.py" = ["FA100", "I002", "PYI030", "UP006", "UP007", "UP035"]
 
 "utils/*" = [

sphinx/util/logging.py

@@ -161,9 +161,9 @@ def warning(  # type: ignore[override]
         self,
         msg: object,
         *args: object,
-        type: None | str = None,
-        subtype: None | str = None,
-        location: None | str | tuple[str | None, int | None] | Node = None,
+        type: str | None = None,
+        subtype: str | None = None,
+        location: str | tuple[str | None, int | None] | Node | None = None,
         nonl: bool = True,
         color: str | None = None,
         once: bool = False,