[flang] [llvm] [mlir] [mlir]Moves the StateStack to IR folder from Support folder. (PR #145598)

[Oleksandr Alex Zinenko via llvm-commits]

ftynse wrote:

Thank you for the hotfix. The proper way of action would have been to revert the PR in question, or at least notify the author of the problem.

https://github.com/llvm/llvm-project/pull/145598