LightMapGI node only bakes light data for child nodes of its parent, but that is not mentioned in the documentation.

[Arnklit]

Your Godot version:
4.2.2 and 4.3

Issue description:
LightMapGI node only bakes light data for child nodes of its parent, but that is not mentioned in the documentation.
Another note should probably be added:

Note: The LightmapGI node only bakes light data for child nodes of its parent. Nodes further up the hierarchy of the scene will not be baked.

URL to the documentation page (if already existing):
https://docs.godotengine.org/en/latest/classes/class_lightmapgi.html

[skyace65]

This also should be mentioned in the manual page here: https://docs.godotengine.org/en/stable/tutorials/3d/global_illumination/using_lightmap_gi.html