Do not create a directory with a trailing space; it cannot be deleted by conventional methods. (#8587)

Author: johnbeisner

test/Microsoft.DotNet.ShellShim.Tests/ShellShimMakerTests.cs

@@ -177,8 +177,9 @@ private static FileInfo MakeHelloWorldExecutableDll()
         {
             const string testAppName = "TestAppSimple";
             const string emptySpaceToTestSpaceInPath = " ";
+            const string directoryNamePostFix = "Test";
             TestAssetInstance testInstance = TestAssets.Get(testAppName)
-                .CreateInstance(testAppName + emptySpaceToTestSpaceInPath)
+                .CreateInstance(testAppName + emptySpaceToTestSpaceInPath + directoryNamePostFix)
                 .UseCurrentRuntimeFrameworkVersion()
                 .WithRestoreFiles()
                 .WithBuildFiles();