This CL
1) adds relaxed version of CodeDataContainer::code_cage_base accessors
   and use them from relaxed CodeDataContainer::code accessors,
2) uses relaxed version of FromCodeT() in JSFunctionRef::code().

Bug: v8:11880, chromium:1293642
Change-Id: Idc9ba59a97a44a0963197cad50b5e5b440f9629e
Cq-Include-Trybots: luci.v8.try:v8_linux64_tsan_rel_ng
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3450423Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Auto-Submit: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79030}