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

[Congcong Cai via cfe-commits]

https://github.com/HerrCai0907 approved this pull request.

LGTM.

could you add some test of
1. nested lambda
2. more complex case in lambda e.g. call a function may throw.

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