[llvm] [AArch64][SVE] Handle consecutive Predicates in CC_AArch64_Custom_Block (PR #90122)

[Eli Friedman via llvm-commits]

https://github.com/efriedma-quic approved this pull request.

Please add a test for `<vscale x 32 x i1>`, to make sure that works.  (I think it should, but just to verify.)

Otherwise LGTM

https://github.com/llvm/llvm-project/pull/90122