Admin panel doesn't recognize a drop down is not empty if it's left on its first value

[hanrelan]

Describe the bug
When you have a dropdown from, for example:

    attribute :type, :atom,
      constraints: [one_of: [:a, :b, :c]],
      allow_nil?: false

In the admin panel, if you don't change the dropdown and leave it on 'a', you get a "type field is required" error when trying to save.

Changing type to 'b' and then back to 'a' fixes it.

Expected behavior
It allows you to save while 'a' is set without having to change it first.

Runtime

• Elixir version: 1.15
• Erlang version: 25
• OS: Mac OS
• Ash version: 2.13.3
• any related extension versions: ash_admin: 0.9.4

[joshprice]

Should be fixed by #69, could you please confirm?

[hanrelan]

Confirmed fixed! Thanks!