Fix an issue with UI not displaying that no diffusion profile is present

ScriptableRenderPipeline/HDRenderPipeline/HDRP/HDRenderPipeline.cs

             }
         }
 
+        public bool IsInternalDiffusionProfile(DiffusionProfileSettings profile)
+        {
+            return m_InternalSSSAsset == profile;
+        }
+
         readonly RenderPipelineMaterial m_DeferredMaterial;
         readonly List<RenderPipelineMaterial> m_MaterialList = new List<RenderPipelineMaterial>();