Cold Messaging Requires a Business to Register Their Phone Number

[chtzvt]

Before creating a cold message, Business users are required to add a phone number to their profile. If a phone number isn't present, they'll be redirected to their Business profile's edit form to add one before continuing.

Pull request checklist

• My code contains tests covering the code I modified
• I linted and tested the project with bin/check
• I added significant changes and product updates to the changelog