'HDRP/Unlit': Ray Tracing Shader compilation is not supported errors are thrown after updating HDRP package from 7.1.7 to 7.2.1.

Steps to repro:
1. Create a new HDRP project.
2. Windows > Package Manager > HDRP Update to 7.2.1.

Actual Result:
Ray Tracing Shader compilation errors are thrown in the console.

Expected Result:
No errors in the console.

Reproducible in:
2020.1.0a24.3156(1f86fad89a55).

Working fine in:
2020.1.0a23, 2019.3.2f1.

Environment:
Only on Mac 10.15.

Stack trace:
Shader error in 'HDRP/Unlit': Ray Tracing Shader compilation is not supported on this platform. at line 402 (on metal)

Compiling RayTracing program
Platform defines: UNITY_ENABLE_REFLECTION_BUFFERS UNITY_USE_DITHER_MASK_FOR_ALPHABLENDED_SHADOWS UNITY_PBS_USE_BRDF1 UNITY_SPECCUBE_BOX_PROJECTION UNITY_SPECCUBE_BLENDING UNITY_ENABLE_DETAIL_NORMALMAP SHADER_API_DESKTOP UNITY_LIGHT_PROBE_PROXY_VOLUME UNITY_LIGHTMAP_FULL_HDR
Disabled keywords: SURFACE_TYPE_TRANSPARENT INSTANCING_ON DOTS_INSTANCING_ON ALPHATEST_ON EMISSIVE_COLOR_MAP BLENDMODE_ALPHA BLENDMODE_ADD BLENDMODE_PRE_MULTIPLY ENABLE_FOG_ON_TRANSPARENT ADD_PRECOMPUTED_VELOCITY UNITY_NO_DXT5nm UNITY_NO_RGBM UNITY_USE_NATIVE_HDR UNITY_FRAMEBUFFER_FETCH_AVAILABLE UNITY_ENABLE_NATIVE_SHADOW_LOOKUPS UNITY_METAL_SHADOWS_USE_POINT_FILTERING UNITY_NO_CUBEMAP_ARRAY UNITY_NO_SCREENSPACE_SHADOWS UNITY_PBS_USE_BRDF2 UNITY_PBS_USE_BRDF3 UNITY_NO_FULL_STANDARD_SHADER SHADER_API_MOBILE UNITY_HARDWARE_TIER1 UNITY_HARDWARE_TIER2 UNITY_HARDWARE_TIER3 UNITY_COLORSPACE_GAMMA UNITY_HALF_PRECISION_FRAGMENT_SHADER_REGISTERS UNITY_LIGHTMAP_DLDR_ENCODING UNITY_LIGHTMAP_RGBM_ENCODING UNITY_VIRTUAL_TEXTURING