This CL splits the stack frame into tagged and untagged slots, and allows reuse
of slots for values that are also tagged/untagged.

Bug: v8:7700
Change-Id: Id068807d1cd9bcd8c9e41d330f44acf346b16685
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3585959Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80023}