[llvm] [GlobalIsel][AArch64] MVP for vectorized selects. (PR #76104)

[Thorsten Schütt via llvm-commits]

tschuett wrote:

The select to floating point minimax fold can never hit for vectorized selects. They do not exist today.
https://github.com/llvm/llvm-project/blob/5841140e38c94f3d2b29354f67e70803d88ce174/llvm/lib/CodeGen/GlobalISel/CombinerHelper.cpp#L6178

https://github.com/llvm/llvm-project/pull/76104