[clang] [clang-format] Fix bad spacing of macro after lambda introducer (PR #92673)

[Matthew Olsson via cfe-commits]

mattco98 wrote:

@nico pointed out that calling `handleAttributes()` in `tryToParseLambda()` might be a better way to fix this, and I might be able to fix his other attribute issue while I'm at it. Going to draft this for now.

https://github.com/llvm/llvm-project/pull/92673