The main change here was to remove the updating instructions for
version 9 and instead point to update.angular.io. This ensures
we only have one "source of truth" for update instructions.
This commit also includes updates to error message text to
keep them up-to-date with live error messages (and thus keep
them searchable).
PR Close#34498
This commit removes one of the expected Ivy changes because we have
decided to change the behavior to be more backwards-compatible.
It also adds a bug fix that is technically breaking to the list of
expected changes.
PR Close#33675