[llvm] [ASAN] Add "sanitized_padded_global" llvm ir attribute to identify sanitizer instrumented globals (PR #68865)

[via llvm-commits]

skc7 wrote:

@hctim please let me know if the new changes for adding "sanitized_padded_global" is fine. I haven't extended the sanitizer metadata.

https://github.com/llvm/llvm-project/pull/68865