Revert "fix: FormItemLayout does not apply item id correctly" (#49635)

Reverts supabase/supabase#49593 because we currently provide `id`
manually in some places and that breaks many tests. We didn't see the
failures because the PR only modified `ui-patterns` which isn't in the
paths checked to actually run the tests (this must be fixed too).

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## Summary by CodeRabbit

* **Bug Fixes**
* Improved form accessibility by correctly associating labels with their
corresponding fields in React form layouts.

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