docs: Add documentation for `auto_update_extensions` (#46130)
Add documentation for the existing `auto_update_extensions` setting that
allows users to toggle auto-updates per extension.
Release Notes:
- N/A
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Co-authored-by: Kunall Banerjee <hey@kimchiii.space>
692bf3087dAdrian committed on 1/7/2026, 10:12:22 AM· committed by GitHubparent49e4102