Instead of hand-coding a loop, use range-based for loops for iterating
signatures. Similarly, {std::transform} can replace a hand-coded loop
for constructing values from return types.

R=thibaudm@chromium.org

Bug: v8:12244
Change-Id: I467656650b731cbcb9ea57c54f5311885bb158dd
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3181520Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77054}