Share the AVX and SSE4_1 code for Pextrd but delegate to base class for
the pre-SSE4.1 code (via CRTP).

Bug: v8:11589
Change-Id: Ic7709ccf7d9029829583c9287c1b0842ff11b799
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3160332Reviewed-by: Adam Klein <adamk@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/main@{#76832}