A while ago, I opened a PR to address the handedness of the is_polygon_clockwise function which has not been merged yet (godotengine/godot#89635).

Originally, I opened a PR to fix the function without adding a handedness parameter, but it was rejected as it would break compatibility. In the meantime, a PR created by lawnjelly has been merged to update the documentation to be more clear about the result returned by the function (godotengine/godot#92154).