[clang] [Clang][Sema] Properly get captured 'this' pointer in lambdas with an explicit object parameter in constant evaluator (PR #81102)

[via cfe-commits]

Sirraide wrote:

Just requested more reviews real quick because this has been open for a month now, and Corentin apparently won’t be able to review prs until April, and I’d also feel a bit bad if I kept pinging just him about this over and over again...

https://github.com/llvm/llvm-project/pull/81102