Instantiating a JumpTableAssembler has some overhead (at least one heap
allocation), so use a single JumpTableAssembler to generate the whole
table, just as the lazy compile table.

R=mstarzinger@chromium.org

Bug: v8:9477
Change-Id: I66622909ac06e6bda9fca3e71c83d4c9d1ded500
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1706054Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#62762}