[llvm] [ARM] Do not emit unwind tables when saving LR around outlined call (PR #69611)

[Eli Friedman via llvm-commits]

efriedma-quic wrote:

Code makes sense.

The testcase is long, and it's hard to read because the outlined parts aren't obviously repetitive.  How hard would it be to simplify?

https://github.com/llvm/llvm-project/pull/69611