Migrate subscription group form errors

What does this MR do and why?

Use new pajamas form errors for group edit page after purchasing subscription

Related to #364983 (closed)

Screenshots or screen recordings

Before	After

How to set up and validate locally

1. Have CustomersDot instance running and connected to the GitLab one OR update the return
2. Open any group page http://localhost:3000/-/subscriptions/groups/<your-group-path>/edit
3. Add unexpected symbols and click Get started
4. Observe the error state of the form

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.