[Housekeeping]: Move forms to use selector in place of various params

[ryanmerolle]

Proposed Changes

Move to leverage selector function in forms as seen in netbox-community/netbox@d1f76be

Before implementing we should keep an eye on the bug netbox-community/netbox/issues/12751

Justification

Minimize the code/logic needed in forms and leverage the underlying model. Simplifies the overall design and code base.