[llvm] [AArch64] [test] Minor fixes for SEH unwind opcode tests (PR #169920)

[Martin Storsjö via llvm-commits]

mstorsjo wrote:

As this is a series of smaller individual changes, I'd prefer to submit them as such (via a manual merge/push), but I'm posting them all in one single PR (see the individual PR descriptions for explanation of each step) to avoid spamming that many individual PRs for essentially the same.

https://github.com/llvm/llvm-project/pull/169920