Array modal's fields now keyboard accessible

[stuartromanek]

Summary

• Ensures array modals' existing fields are keyboard accessible when modal is opened.
• Ensures new array items' fields are keyboard accessible when added

What are the specific steps to test this change?

1. Check these two scenarios https://github.com/user-attachments/assets/b1e1f42d-982c-4b13-ba12-4552dae470b3

What kind of change does this PR introduce?

(Check at least one)

• [x] Bug fix
• [ ] New feature
• [ ] Refactor
• [ ] Documentation
• [ ] Build-related changes
• [ ] Other

Make sure the PR fulfills these requirements:

• [ ] It includes a) the existing issue ID being resolved, b) a convincing reason for adding this feature, or c) a clear description of the bug it resolves
• [ ] The changelog is updated
• [ ] Related documentation has been updated
• [ ] Related tests have been updated

If adding a new feature without an already open issue, it's best to open a feature request issue first and wait for approval before working on it.

Other information: