[clang] Revert "[clang][dataflow] Correctly handle `InitListExpr` of union type." (PR #82856)

[via cfe-commits]

martinboehme wrote:

I see you haven't merged this revert yet.

Alternatively, here's a fix-forward, if you're prepared to go with that:

https://github.com/llvm/llvm-project/pull/82986

Otherwise, do of course merge the revert, and I'll reland with the fix-forward incorporated.

https://github.com/llvm/llvm-project/pull/82856