This is required when sampling an albedo map from a texture array
in 3D. Otherwise, colors will look washed out.
(cherry picked from commit 491acf346d)
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.