[llvm] [MachineSink][AArch64] Enable sink-and-fold by default (PR #72132)

[David Green via llvm-commits]

https://github.com/davemgreen approved this pull request.

With the last debug info being fixed, this still LGTM. Thanks for pushing this through.

(You can probably remove the command line from llvm/test/CodeGen/AArch64/sink-and-fold.ll again).

https://github.com/llvm/llvm-project/pull/72132