[llvm] Reenable JumpTableToSwitch pass by default (PR #83229)

[David Spickett via llvm-commits]

DavidSpickett wrote:

It did reproduce on a Graviton. At `-j4` due to RAM constraints, without the pass it took 2h10m and with I killed the build after almost 5 hours. So this is not machine specific, perhaps it is architecture specific in that AArch64 has more inlining to do?

On the original machine the overnight build is at 14 hours and counting and a few processes got killed by the system, so I'll stop it there. Not a particularly useful result but I was curious if it would complete.

https://github.com/llvm/llvm-project/pull/83229