LoadTransform is always a SIMD operation (it always results in a v128),
so it should unconditionally set has_simd_.

Bug: chromium:1137583
Change-Id: I8496e787c89edec734f4bbfd16dd8b5995fab98a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2472638Reviewed-by: Bill Budge <bbudge@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#70518}