SaveChangesAsync_accepts_changes_with_ConfigureAwait_true failed

[AndriySvyryd]

Assert.True() Failure
Expected: True
Actual: False
in /_/test/EFCore.Specification.Tests/Query/AdHocMiscellaneousQueryTestBase.cs:line 1417

Failed for Sqlite: dev.azure.com/dnceng/internal/_build/results?buildId=2542978&view=ms.vss-test-web.build-test-results-tab&runId=54223469&resultId=109767&paneView=debug

[maumar]

same thing for InMemory

[roji]

I indeed did the original work on this, but if someone wants to pick this up, please feel free to do so...