[clang] [MS][clang] Add support for vector deleting destructors (PR #126240)

[Reid Kleckner via cfe-commits]

rnk wrote:

I think the `.SCOV$M` section globals should be in the `??_EClassA@@UEAAPEXI at Z` comdat group. I think sanitizer coverage (sancov) is one of the lesser-used sanitizers here, and it may lack some sophistication when it comes to comdat groups. I wasn't aware of this creative use of `blockaddress` until just now.

https://github.com/llvm/llvm-project/pull/126240