Removed the dependency of layer mask of hair shadow caster;

Added HairShadowCaster pass;

Runtime/HDRP/UTS Renderer/UTSHairShadowPass.cs

@@ -108,13 +108,12 @@ namespace Misaki.HdrpToon
                 depthState = new DepthState(true, CompareFunction.LessEqual),
             };
 
-            var result = new RendererListDesc(HDShaderPassNames.s_DepthForwardOnlyName, ctx.cullingResults, ctx.hdCamera.camera)
+            var result = new RendererListDesc(UtsShaderPassName.hairShadowCasterPassId, ctx.cullingResults, ctx.hdCamera.camera)
             {
                 renderQueueRange = GetRenderQueueRange(RenderQueueType.All),
                 sortingCriteria = SortingCriteria.CommonOpaque,
                 excludeObjectMotionVectors = false,
                 stateBlock = stateBlock,
-                layerMask = layerMask,
             };
 
             CoreUtils.DrawRendererList(ctx.renderContext, ctx.cmd, ctx.renderContext.CreateRendererList(result));