[clang-tools-extra] [clang-tidy] Switch misc-confusable-identifiers check to a faster algorithm. (PR #130369)

[Piotr Zegar via cfe-commits]

PiotrZSL wrote:

Perfect, do one more test, compare findings before and after from for example llvm, if they catch same thing. As for a change, I will try to review it this week.

https://github.com/llvm/llvm-project/pull/130369