The baseline compiler wasn't saving the accumulator when generating code
for StaDataPropertyInLiteral. This could lead to issues in cases where
the bytecode compiler optimized away loads of a register into the
accumulator.

Fixed: chromium:1236978
Change-Id: I8603a4c7446664f82b35db61f81cacefce2e4f3b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3090326
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Patrick Thier <pthier@chromium.org>
Auto-Submit: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Patrick Thier <pthier@chromium.org>
Cr-Commit-Position: refs/heads/master@{#76249}