[clang] [llvm] [PAC] Fix address discrimination for type info vtable pointers (PR #102199)

[Daniil Kovalev via cfe-commits]

kovdan01 wrote:

@efriedma-quic @ahmedbougacha @ojhunt Would be glad to see your comments after the latest commit 0c20bcdf35f3c15024986da50cafb2a8c155e3cf which introduces using actual storage address instead of 'inttoptr 1' placeholder.

https://github.com/llvm/llvm-project/pull/102199