[clang] [Clang] [CodeGen] Perform derived-to-base conversion on explicit object parameter in lambda (PR #89828)

[Vlad Serebrennikov via cfe-commits]

Endilll wrote:

@Sirraide See example of https://github.com/llvm/llvm-project/blob/662ef8604268b207910225ecca90daf30a46720b/clang/test/CXX/drs/dr25xx.cpp#L148
In this case, the date should be 2024-04-19.

https://github.com/llvm/llvm-project/pull/89828