(new-types-package-org-4) Make name more clear. Eliminate named dicts and selectors
First just eliminate the API to specify name on a Selector or
Then name to "given_name". It is only valid for scalars and enums. No other types are given names.
Depends on D1823
Test Plan: BK
Reviewers: alangenfeld, max
Reviewed By: alangenfeld
Differential Revision: https://dagster.phacility.com/D1824