[clang-tools-extra] [clang-tidy] support expect no diagnosis test (PR #91293)

[Danny Mösch via cfe-commits]

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

I like this much more than an explicit option. However, consider my feedback as suggestions only as I don't have that much of experience with the project. I might miss or misinterpret something.

https://github.com/llvm/llvm-project/pull/91293