The {LiftoffAssembler::Load} method already receives an {i64_offset}
parameter which skips the UXTW (zero extension of 32-bit addresses) in
the memory operand. The same needs to happen on stores.

On 32-bit platforms, we cannot have addresses >=4GB anyway (they would
be detected as OOB before reaching the point in question), so this is
not a problem. On x64, all 32-bit registers are zero-extended already
(which is debug-checked in the generated code), so this is also no
problem (and we just ignore the additional parameter).

R=jkummerow@chromium.org

Bug: v8:10949
Change-Id: I3c2266dde1bf9d182b6759893f7f64540ae12261
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3791051
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82074}