AmbiguousStartupProject is failing

[nkolev92]

This test is failing.

Expected <System.__ComObject> but got <System.__ComObject>. Expected A\A.csproj, but Default project is actually foo\A\A.csproj. At GetProjectTest.ps1: line 231

It is a true failure. Unsure when this regressed.

[nkolev92]

Passed in 6.14, https://devdiv.visualstudio.com/DevDiv/_build/results?buildId=12776355&view=ms.vss-test-web.build-test-results-tab&runId=146142486&resultId=100084.