We have saturated_cast from safe_conversions, use it in the interpreter
instead of implementing it ourselves for each pair of types to convert
between.

Bug: v8:11074
Change-Id: I81115458d2bc456cbc3e4cd9fb40f01abe33246f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2649147Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72374}