When loading from the exported function data without pointer
compression, wrong load was used before.

Bug: v8:10701, chromium:1130385
Change-Id: If66913bcd5284eeb6fb7b795357f1512682a062f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2426383
Commit-Queue: Eva Herencsárová <evih@google.com>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
Cr-Commit-Position: refs/heads/master@{#70124}