Add the ability to control whether or not Hardware Ray Tracing (HWRT)
is enabled during render tests.
This is done by adding `-RT` to the end of the device name in the
Cycles device list. E.g. `HIP-RT`. This is supported with HIP, oneAPI,
and Metal.
Change in behaviour:
If you do not specify `-RT`, then HWRT will be disabled. This results
in a change in behaviour:
1. `METAL` device tests on M3 or newer Macs no longer using MetalRT
2. `ONEAPI` device tests no longer use Embree GPU.
Note: Some tests are failing on some platforms/configurations that can
now be easily tested due to this commit. This does not effect the
build bot automated testing as it does not test these configurations.
These tests have not been blocked from running, primarily to help
developers investigate and fix the issues.
Ref #123012
Pull Request: https://projects.blender.org/blender/blender/pulls/125082
bcf53fd5da