- Implements WasmInt32ToHeapNumber, WasmTaggedNonSmiToInt32, and
  WasmTaggedToFloat64 as Torque builtins.

Bug: v8:10070
Change-Id: I8b16d000b5283f27f7762341e9dbbaf5ab3ebb62
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2173395Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Bill Budge <bbudge@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67544}