[clang-tools-extra] [clangd] Replay macro definitions from preamble for clang-tidy checks (PR #202495)

[Aleksandr Platonov via cfe-commits]

ArcsinX wrote:

> Ping @HighCommander4 — ArcsinX has approved this PR. Could you help land it when you have a moment? Thanks!

I can land this for you, if you are not planning to address nits

https://github.com/llvm/llvm-project/pull/202495