By keeping the SharedFunctionInfo around for modules with the kErrored
status, we don't need the additional script field anymore. The script
can thus be always accessed indirectly through the code object.

Removing the script field fixes context serialization of modules.

Bug: v8:11073
Change-Id: I9bb3c6b129a41e9d708547ceeb35e6d921c8eea0
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2504256
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
Reviewed-by: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71096}