[llvm] [LLVM][CodeGen] Enable the AArch64PTrueCoalescing pass. (PR #225830)

[Sander de Smalen via llvm-commits]

https://github.com/sdesmalen-arm approved this pull request.

I've not spotted any issues to the tests, but I've not reviewed the pass itself so I'm going to have to trust that the reviewers of #204820 did a good job ironing out any possible issues. From that perspective, I'm not sure my acceptance of this PR is worth much.

https://github.com/llvm/llvm-project/pull/225830