add back lightgbm crash mitigation as we are seeing several crash so there might be more issue there (#4929)

Author: frank-dong-ms-zz

test/Microsoft.ML.Tests/Properties/AssemblyInfo.cs

@@ -0,0 +1,8 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using Xunit;
+
+// TODO: [TEST_STABILITY] disable test parallelization for this assembly as running test in parallel sometimes cause test host process to crash
+[assembly: CollectionBehavior(DisableTestParallelization = true)]