fix(ui): use consistent row ids when duplicating array and block rows (#13679)

Fixes #13653.

Duplicating array rows causes phantom rows to appear. This is because
when duplicate the row locally, we use inconsistent row IDs, e.g. the
`array.rows[0].id` does not match its `array.0.id` counterpart. This
causes form state to lose the reference to the existing row, which the
server interprets as new row as of #13551.

Before:


https://github.com/user-attachments/assets/9f7efc59-ebd9-4fbb-b643-c22d4d3140a3

After:


https://github.com/user-attachments/assets/188db823-4ee5-4757-8b89-751c8d978ad9

---
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used, see below:
  - https://app.asana.com/0/0/1211210023936585

next-env.d.ts

@@ -1,6 +1,5 @@
 /// <reference types="next" />
 /// <reference types="next/image-types/global" />
-/// <reference path="./.next/types/routes.d.ts" />
 
 // NOTE: This file should not be edited
 // see https://nextjs.org/docs/app/api-reference/config/typescript for more information.