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

[Thomas Fransham via llvm-commits]

fsfod wrote:

I remember I had to work around with a clang-cl bug that was fixed in v19 to get these to export correctly.

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