[clang] [Clang][Sema] Tweak tryCaptureVariable for unevaluated lambdas (PR #93206)

[Younan Zhang via cfe-commits]

zyn0217 wrote:

@cor3ntin I have reduced the test cases (removed duplicate ones) and hopefully they look better. Can you please take another look? thanks!

https://github.com/llvm/llvm-project/pull/93206