Re-use set breakpoint logic for wasm script to set breakpoint to first
breakable position of given wasm function.

Bug: v8:9724
Change-Id: Ibd6b59d5b93c6895f71f0114291bf78db03aee0b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2001564
Commit-Queue: Z Nguyen-Huu <duongn@microsoft.com>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#65827}