Replace Incomplete | None = None in third party stubs (#14063)

stubs/opentracing/opentracing/span.pyi

@@ -1,4 +1,3 @@
-from _typeshed import Incomplete
 from types import TracebackType
 from typing import Any
 from typing_extensions import Self
@@ -26,5 +25,5 @@ class Span:
     def __exit__(
         self, exc_type: type[BaseException] | None, exc_val: BaseException | None, exc_tb: TracebackType | None
     ) -> None: ...
-    def log_event(self, event: Any, payload: Incomplete | None = None) -> Self: ...
+    def log_event(self, event: Any, payload=None) -> Self: ...
     def log(self, **kwargs: Any) -> Self: ...