project: Move tests to integration layer (#47596)

Building project tests takes 6.5s instead of 18s that way.

Release Notes:

- N/A

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Co-authored-by: Zed Zippy <234243425+zed-zippy[bot]@users.noreply.github.com>
aceff52f8aPiotr Osiewicz committed on 1/25/2026, 8:35:32 PM· committed by GitHubparentdadb5ea
45 files changedLine totals unavailable