feat: add AUTO condition to SearchAsYouTypeSpec in v1alpha and v1beta (#33829)

* feat: add AUTO condition to SearchAsYouTypeSpec in v1alpha and v1beta

PiperOrigin-RevId: 897859462

Source-Link: googleapis/googleapis@f01ba6b

Source-Link: googleapis/googleapis-gen@f16c389
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* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

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Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>

Author: gcf-owl-bot[bot]