[llvm] WIP: AMDGPU: Use MFPropsModifier modifier in SIFoldOperands (PR #127752)

[Matt Arsenault via llvm-commits]

arsenm wrote:

> Moved `MFPropsModifier` to NPM's `run` method.

I think this is a decent example of why this is a terrible API. There's no enforcement that every pass uses it

https://github.com/llvm/llvm-project/pull/127752