License option on "Create Dandiset" form missing asterisk to indicate it is required

[rly]

Describe the issue

The description also suggests you can select a set of licenses when you can only select one here. The dandi schema suggests you can provide more than one but I think 1) most users would not do that and 2) it would be super confusing given these two options. So we should continue allowing only one.

Steps to Reproduce

Create a dandiset with UI

Operating System

Mac OS with Mac M1

GUIDE Version

main

Code of Conduct

Yes

Did you confirm this issue was not already reported?

Yes

[CodyCBakerPhD]

Just reminding about #761 from the compilation list (item 2.d) since it kind of relates and we do have a radio button component now