[clang-tools-extra] [clang-tidy] Preserve typedef comments in `modernize-use-using` (PR #180372)

[Daniil Dudkin via cfe-commits]

unterumarmung wrote:

Only the last commit in the pull request needs to be reviewed. The other commits are from the previous PR that the current one is dependent on.

https://github.com/llvm/llvm-project/pull/180372