[clang] [analyzer] use `invalidateRegions()` in `VisitGCCAsmStmt` (PR #109838)

[Balazs Benics via cfe-commits]

https://github.com/steakhal approved this pull request.

A direct bind can be always swapped out for an invalidation, so this PR is correct.
I wonder if you have plans for interpreting the asm block to see if we could do something better - e.g. because we could infer that it will only write a specific input element instead of any reachable memory regions.

https://github.com/llvm/llvm-project/pull/109838