[clang] [clang-tools-extra] [clangd] Make clangd run `format::cleanupAroundReplacements()` for all code actions just as clang-tidy does (PR #118569)

[Chris B via cfe-commits]

https://github.com/llvm-beanz approved this pull request.

This mostly looks good to me. I have a few style nits to use more idomatic patterns and conform better to LLVM coding standards.

https://github.com/llvm/llvm-project/pull/118569