Disable unstable Materials tests

Author: AngelaDematte

Packages/com.unity.render-pipelines.high-definition/Tests/Editor/DiffusionProfilesTests.cs

@@ -2,6 +2,8 @@
 using System;
 using System.Collections.Generic;
 using UnityEditor;
+using UnityEngine;
+using UnityEngine.TestTools;
 using UnityEditor.Rendering;
 
 namespace UnityEngine.Rendering.HighDefinition.Tests
@@ -75,6 +77,7 @@ private static void CreateMaterialAndSetProfile(string materialPath, DiffusionPr
         }
 
         [Test]
+        [UnityPlatform(exclude = new RuntimePlatform[] { RuntimePlatform.WindowsEditor })] // Unstable: https://jira.unity3d.com/browse/UUM-132689
         public void DiffusionProfile_AutoRegister()
         {
             m_List.ReplaceWithArray(Array.Empty<DiffusionProfileSettings>());
@@ -128,6 +131,7 @@ public void NullDiffusionProfileSettingsAreRemovedWhenAddingANewDiffusionProfile
         }
 
         [Test]
+        [UnityPlatform(exclude = new RuntimePlatform[] { RuntimePlatform.WindowsEditor })] // Unstable: https://jira.unity3d.com/browse/UUM-132689
         public void RegisterReferencedDiffusionProfiles()
         {
             GraphicsSettings.GetRenderPipelineSettings<DiffusionProfileDefaultSettings>().autoRegister = true;