Before this commit, only StandardError exceptions can be handled by
rescue_from handlers.

This changes the rescue clause to catch all Exception objects, allowing
rescue handlers to be defined for Exception classes not inheriting from
StandardError.

This means that rescue handlers that are rescuing Exceptions outside of
StandardError exceptions may rescue exceptions that were not being
rescued before this change.

Co-authored-by: Adrianna Chang <adrianna.chang@shopify.com>