required a phone to be submitted when using amazon classic

[dpanta94]

All Submissions:

• [x] Does your code follow the Extendables standards?
• [ ] Have you written new tests for your changes, as applicable?
• [x] Have you successfully run tests with your changes locally?

Changes proposed in this Pull Request:

Closes https://app.clickup.com/t/258rpda .

Other information:

• [x] Have you checked to ensure there aren't other open Pull Requests for the same update/change?

Changelog entry

Fix - Makes a phone field to be submitted required when using Amazon Pay "Classic"