DCJ-687: Add dynamic warning for users with no institution

[rushtong]

Addresses

https://broadworkbench.atlassian.net/browse/DCJ-687

Summary

Adds a user warning to select an institution we know about. There are three cases here:

User has selected an institution

User has entered a suggested institution

We allow for users to suggest an institution. Currently, there are no backend processes that do anything with this information. At one point, we did, but I believe that has been replaced with the current version when the AffiliationsAndRole component was first introduced.

User has not yet chosen an institution

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[fboulnois]

Looks good, thank you! 👍