New deeply nested sections cause sidebar to not start at the right place

[31]

Your Godot version:

4.2 / stable

Chrome Version 119.0.6045.200 (Official Build) (64-bit)

Issue description:

When visiting https://docs.godotengine.org/en/stable/tutorials/scripting/c_sharp/index.html, the sidebar scrolls to the open section.

When visiting https://docs.godotengine.org/en/stable/tutorials/scripting/c_sharp/c_sharp_differences.html, which lacks an entry in the sidebar, the sidebar starts at the top.

I'd expect the Godot API for C# element to be visible, because that's what highlighted.