If a new code space is added after functions have already been
compiled, we need to initialize the new jump tables to contain all
these functions.

R=mstarzinger@chromium.org

Bug: v8:9477
Change-Id: Ie960966ec5ad667e0626f86eceb7c2b4da72e5bd
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1803337
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63792}