[clang] [Sema][NFC] Move two misplaced uninit tests to clang/test/SemaCXX (PR #128013)

[Aaron Ballman via cfe-commits]

https://github.com/AaronBallman approved this pull request.

This makes sense to me, but I added some other folks just to sanity check.

https://github.com/llvm/llvm-project/pull/128013