Remove "What would you like to do?" question from Welcome screen of invite flow
Overview
With https://gitlab.com/groups/gitlab-org/-/epics/6630 we added a question to the registration flow that allows a user to indicate if they are joining vs. setting up a project. Those that select "joining" bypass the group and project creation steps of the flow. Those selecting "creating" continue to create a group and project.
The page is shared with the invitation flow, however, and regardless of the answer the user is brought to the activity page for the corresponding project or group.
We should remove the question from the invite-specific flow to reduce the fields and potential confusion that its presence may cause.