[llvm] [GlobalISel][AArch64] Legalize G_INSERT_VECTOR_ELT for SVE (PR #114470)

[Thorsten Schütt via llvm-commits]

tschuett wrote:

Last PR had only MIR tests, which hid the LLVM-IR issue and made Windows CI unhappy.

https://github.com/llvm/llvm-project/pull/114470