R1:cc1b30dee70a

Touch up auth external account ui

Summary: Fixes T8886

Test Plan: Check auth settings at different breakpoints.

Reviewers: btrahan, epriestley

Reviewed By: epriestley

Subscribers: epriestley, Korvin

Maniphest Tasks: T8886

Differential Revision: https://secure.phabricator.com/D13650