Do no pass down to implicit restore the framework option.

TestAssets/DesktopTestProjects/MultiTFMXunitProject/XUnitProject/UnitTest1.cs

@@ -0,0 +1,24 @@
+// Copyright (c) .NET Foundation and contributors. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+using System;
+using TestLibrary;
+using Xunit;
+
+namespace TestNamespace
+{
+    public class VSTestXunitTests
+    {
+        [Fact]
+        public void VSTestXunitPassTest()
+        {
+            Assert.Equal("This string came from the test library!", Helper.GetMessage());
+        }
+
+        [Fact]
+        public void VSTestXunitFailTest()
+        {
+            Assert.Equal(2, 2);
+        }
+    }
+}