[clang] [Clang] [Sema] Fix dependence of DREs in lambdas with an explicit object parameter (PR #84473)

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Sirraide wrote:

@Link1J The issue you linked does seem to be another symptom of the underlying problem here, yeah. It’s also not technically a duplicate, so I’ve left it open and marked it as fixed by this pr.

https://github.com/llvm/llvm-project/pull/84473