[clang-tools-extra] [clangd] update list of fast tidy checks (PR #69723)

[kadir çetinkaya via cfe-commits]

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

> (this diff isn't great news for the idea of treating new checks as slow by default :-()

Well, FWIW, i think that was the trade-off we made. Most of the checks are fast, but when a slow one sneaks in, it's really hard to notice. So by being more explicit about the checks we enable, we make sure quality stays "acceptable" at the cost of missing new checks until they're explicitly turned on.

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While at it, I wonder if the list of disabled checks are useful to mention in release notes going forward. I think we should at least create bugs in llvm-project issue tracker so that the authors are aware. WDYT?

https://github.com/llvm/llvm-project/pull/69723