[DirectX] Set AdvancedTextureOps flag for basic sample ops with non-constant offset (#215916)
Fixes https://github.com/llvm/llvm-project/issues/210462
This PR modifies `DXILShaderFlags.cpp` to set the `AdvancedTextureOps`
shader flag true whenever any of
- `Intrinsic::dx_resource_load_level`
- `Intrinsic::dx_resource_sample`
- `Intrinsic::dx_resource_sample_clamp`
- `Intrinsic::dx_resource_samplebias`
- `Intrinsic::dx_resource_samplebias_clamp`
- `Intrinsic::dx_resource_samplelevel`
- `Intrinsic::dx_resource_samplegrad`
- `Intrinsic::dx_resource_samplegrad_clamp`
are used with a non-constant offset.
Assisted by: Claude Opus 5