[clang] [Sema][CTAD] Allow user defined conversion for copy-list-initialization (PR #94752)

[Gábor Spaits via cfe-commits]

spaits wrote:

> thanks, looks good.

Thank you for reviewing. When the CI run finishes and it is successful I will merge this PR.

https://github.com/llvm/llvm-project/pull/94752