Fix incorrect placement of leading function comment with type params (#12447)

crates/ruff_python_formatter/resources/test/fixtures/ruff/statement/class_definition.py

@@ -224,3 +224,25 @@ class QuerySet(AltersData):
 
     as_manager.queryset_only = True
     as_manager = classmethod(as_manager)
+
+
+# Decorators
+@decorator
+# comment
+class Foo1: ...
+
+@decorator
+# comment
+class Foo2(Foo1): ...
+
+@decorator
+# comment
+class Foo3[T]: ...
+
+@decorator  # comment
+class Foo4: ...
+
+@decorator
+# comment
+@decorato2
+class Foo5: ...

crates/ruff_python_formatter/resources/test/fixtures/ruff/statement/function.py

@@ -436,3 +436,25 @@ def function_with_variadic_generics(*args: *tuple[int],): ...
 
 # Generic arguments (PEP 695)
 def func[T](lotsoflongargs: T, lotsoflongargs2: T, lotsoflongargs3: T, lotsoflongargs4: T, lotsoflongargs5: T) -> T: ...
+
+
+# Decorators
+@decorator
+# comment
+def foo[S](x: S) -> S: ...
+
+@decorator
+# comment
+def foo(x: S) -> S: ...
+
+@decorator
+# comment
+def foo() -> S: ...
+
+@decorator
+# comment
+@decorator2
+def foo(x: S) -> S: ...
+
+@decorator # comment
+def foo(x: S) -> S: ...