Fix/trial registration phone

related issue #862 (closed)

What does this MR do and why?

This MR fix the missing of phone number on trial registration page.

Screenshots or screen recordings

No screenshots, only backend changes.

How to set up and validate locally

With INVALID verification code

1. Goto the trial registration without login
2. Submit an invalid verification code
3. You should see an error message after submitting the form

With VALID verification code

1. Goto the trial registration without login
2. Submit an valid verification code
3. You should see user register successfully
4. Login and goto Profile page
5. You should see a correct phone number with area code

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.