Add VCTargetsPath to VerifyVSDistributionPath (#10554)

This changes the experience for trying to `dotnet msbuild` vcxproj from

```
ConsoleApplication3.vcxproj(28,3): error MSB4019: The imported project "C:\Microsoft.Cpp.Default.props" was not found. Confirm that the expression in the Import declaration "\Microsoft.Cpp.Default.props" is correct, and that the file exists on disk.
```

to

```
ConsoleApplication3.vcxproj(28,3): error MSB4278: The imported file "$(VCTargetsPath)\Microsoft.Cpp.Default.props" does not exist and appears to be part of a Visual Studio component. This file may require MSBuild.exe in order to be imported successfully, and so may fail to build in the dotnet CLI.
```

src/Build/Evaluation/Evaluator.cs

@@ -2579,7 +2579,8 @@ private void SetAllProjectsProperty()
         private void VerifyVSDistributionPath(string path, ElementLocation importLocationInProject)
         {
             if (path.IndexOf("Microsoft\\VisualStudio", StringComparison.OrdinalIgnoreCase) >= 0
-                || path.IndexOf("Microsoft/VisualStudio", StringComparison.OrdinalIgnoreCase) >= 0)
+                || path.IndexOf("Microsoft/VisualStudio", StringComparison.OrdinalIgnoreCase) >= 0
+                || path.IndexOf("$(VCTargetsPath)", StringComparison.OrdinalIgnoreCase) >= 0)
             {
                 ProjectErrorUtilities.ThrowInvalidProject(importLocationInProject, "ImportedProjectFromVSDistribution", path);
             }