[clang] [MS-ABI] create unique vftable name for vftable defined with internal alias. (PR #71748)

[Eli Friedman via cfe-commits]

efriedma-quic wrote:

The simplest thing to do is rebase and force-push.  You can alternatively try to use a merge commit, but I'm not completely sure how github would react to that.

https://github.com/llvm/llvm-project/pull/71748