_(NOTE: This is a clone of [PR 114067](https://projects.blender.org/blender/blender/pulls/114067), but targeting `blender-v4.0-release` as originally intended)_
This PR removes the "experimental" disclaimer from the MetalRT control now that the unit tests all render correctly with it enabled. As well as "Off" and "On", this adds a third "Auto" setting - a new default which can be used to pick the best option.
Pull Request: https://projects.blender.org/blender/blender/pulls/114232
e9ad267151