When in the trial flow, hide intention question

What does this MR do and why?

While in the registration flow, don't ask a user what they want to do (which allows the user to bypass the registration). Instead, continue their trial flow.

part of: #351142 (closed)

Screenshots or screen recordings

before	after

How to set up and validate locally

Numbered steps to set up and validate the change are strongly suggested.

1. Ensure your environment is acting as sass

2. If your local environment isn't configured to communicate with the customers app, then stub the responses in the trials controller from GitlabSubscriptions::ApplyTrialService, GitlabSubscriptions::CreateHandRaiseLeadService and GitlabSubscriptions::CreateLeadService

3. Enable the bypass_registration experiment: Feature.enable(:bypass_registration)

4. Start at the trials_registrations page (http://localhost:3000/-/trial_registrations/new)

5. After signing up confirm the "What would you like to do?" Radio input question isn't on the /users/sign_up/welcome screen

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.