When reparsing the class scope to collect initializers in sloppy mode,
the class scope may still have a scope info without any allocated
variables. If its outer scope doesn't have an outer scope (which means
the outer scope in the optimized scope chain becomes the script scope),
we should also set the scope info in the script scope as is done
in Scope::DeserializeScopeChain() for the scope resolution.

Bug: chromium:1290587, v8:10704
Change-Id: I7804d53f330e59d4ab0405a11b132569f348b55d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3413647Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Commit-Queue: Joyee Cheung <joyee@igalia.com>
Cr-Commit-Position: refs/heads/main@{#78784}