[TurboFan] Use regular arrays instead of vector for checkpoint params

We don't need dynamic allocation for these arrays.

Change-Id: I12095ec0e3b6e9d70be56adfb77aded5c25eb3d5
Reviewed-on: https://chromium-review.googlesource.com/c/908462
Commit-Queue: Michael Stanton <mvstanton@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Reviewed-by: Peter Marshall <petermarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59824}