The WasmThrow and WasmRethrow runtime functions have the same signature,
but we should still use the correct description in case the signature
changes (which is planned for a follow-up CL).

R=thibaudm@chromium.org

Bug: v8:11453
Change-Id: Iaec9c353d30fa7673ceb8994e3029c4adfc01311
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2697348Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72784}