Move optimized implementation (accounts for AVX2) into
shared-macro-assembler, and use it everywhere.

Drive-by fix in liftoff-assembler-ia32.h to use Movss and Movsd
macro-assembler functions to that they emit AVX when supported.

Bug: v8:11589
Change-Id: Ibc4f2709d323d5b835bcac175a32b422d47d3355
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3095008
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Reviewed-by: Deepti Gandluri <gdeepti@chromium.org>
Cr-Commit-Position: refs/heads/main@{#76372}