Fix requesting an Int32 from a tagged value that was already converted
to Float64 (because it was on one side of Number feedback but was itself
a Smi), and DoubleRegister locations in deopts.

Bug: v8:7700
Change-Id: I01615a6c520c9e086f3544c2656aa04bf3fc1eaa
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3660254Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80698}