Build Clean in VS doesn't fully clean everything that it should

Description

I ran into this issue when investigating tickets: #13342 and #13356.

Running "Build > Clean Solution" in VS does not fully clean everything.

In particular, it should remove everything under the path: `source\test\testdata\out\...`

Assignee

Jeff Genovy

Reporter

Jeff Genovy

Components

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Reviewer

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Priority

minor

Time Needed

None

Fix versions

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