[clang-tools-extra] [clang-tidy] Improve `bugprone-exception-escape`'s handling of lambdas (PR #160592)

[Baranov Victor via cfe-commits]

vbvictor wrote:

I'd generally wish to add more edge cases for lambdas, just as with functions.
I guess we twist a little how lambdas are processed so we should cover it with more tests

https://github.com/llvm/llvm-project/pull/160592