[llvm] [CodeGen] Port PrintMIR to new pass manager (PR #79440)

[Matt Arsenault via llvm-commits]

arsenm wrote:

> function passes won't affect the rest of the module? (in principle they shouldn't but idk enough about codegen to know if this is true or not)

MachineFunction passes won't change the Module. There is some unfortunate statefulness in MachineModuleInfo that I was working towards eliminating a couple years ago but never finished.

https://github.com/llvm/llvm-project/pull/79440