This also replaces a non-breaking space that was accidentally added in
the EditorFeatureProfile documentation.
This closes#31393.
(cherry picked from commit 2f46f1e7b1)
We already removed it from the online docs with #35132.
Currently it can only be "Built-In Types" (Variant types) or "Core"
(everything else), which is of limited use.
We might also want to consider dropping it from `ClassDB` altogether
in Godot 4.0.
