[Feature Request] WaveMatrix ops should be allowed in node shaders

[pow2clk]

Is your feature request related to a problem? Please describe. WaveMatrix operations are not allowed in node shaders due to their stage limits set in https://github.com/microsoft/DirectXShaderCompiler/blob/1f162e2230158e8b3d6c70ea31817c1a90a2de22/utils/hct/hctdb.py#L650

Describe the solution you'd like WaveMatrix operations should be allowed in node shaders and tested.

Describe alternatives you've considered We aren't currently aware of a specific requirement for wave matrices in node shaders, so we have no definitive reason why leaving them out would impact anyone. However, these operations are intended for compute stages and node stages are compute stages in most respects. To omit them would be to leave out functionality that is expected in similar stages.

Additional context Uncovered as the result of #5345 investigation.