[llvm] [Analysis] Provide inlined `AnalysisKey` in `AnalysisInfoMixin` (PR #116046)

[via llvm-commits]

paperchalice wrote:

Should be fine if `ID` returns `&AnalysisInfoMixin::Key`. Looks like it's not time yet because we need a new enough `clang-cl`.

https://github.com/llvm/llvm-project/pull/116046