Fixes: #21031 ### Root cause: This feature was never fully implemented even though the placeholder text suggested it was supported. It could only update one handle at a time. ### Fix Fixed the zod validation to validate each handle separately. Used `useCreateManyRecords` to update multiple handles at the same time. ### Before: <img width="2032" height="1162" alt="Screenshot 2026-05-29 at 3 25 12 PM" src="https://github.com/user-attachments/assets/ae6b6ae3-ed38-4410-801e-11f514773681" /> ### After: https://github.com/user-attachments/assets/69354129-422a-41de-baf7-fa5a28f01f3f --------- Co-authored-by: cubic-dev-ai[bot] <191113872+cubic-dev-ai[bot]@users.noreply.github.com> Co-authored-by: Etienne <45695613+etiennejouan@users.noreply.github.com>