Order terms by 'name' when populating object term cache.

[34217] removed the `ORDER BY` clause from `update_object_term_cache()`, for
improved performance. But this proved to cause problems in cases where users
were expecting the results of `get_the_terms()` to be ordered by 'name'. Let's
revert the change for the time being, and look into more disciplined ordering
in a future release.

Props afercia.
See #28922. Fixes #35180.
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