Cycles: Update OptiX denoiser type

Update the OptiX denoiser model type to the newer and more frequently
updated `OPTIX_DENOISER_MODEL_KIND_AOV` denoiser.

The output of the new denoiser type is typically higher quality.
And the old denoiser is no longer being updated.

Original change was proposed by Patrick Mours from NVIDIA.

Pull Request: https://projects.blender.org/blender/blender/pulls/132542

intern/cycles/integrator/denoiser_optix.cpp

@@ -256,7 +256,7 @@ bool OptiXDenoiser::denoise_create_if_needed(DenoiseContext &context)
   denoiser_options.guideAlbedo = context.use_pass_albedo;
   denoiser_options.guideNormal = context.use_pass_normal;
 
-  OptixDenoiserModelKind model = OPTIX_DENOISER_MODEL_KIND_HDR;
+  OptixDenoiserModelKind model = OPTIX_DENOISER_MODEL_KIND_AOV;
   if (context.use_pass_motion) {
     model = OPTIX_DENOISER_MODEL_KIND_TEMPORAL;
   }