make User's show page not break for admins
make User's show page not break for admins

fixes CNVS-25757

Test plan:
 0. Create a root account without a name.
 1. As an admin, navigate to a user show page of the form:
    courses/:course_id/users/:user_id
 2. Verify it loads.

Change-Id: Iedda480c75d0221f89134598564503971329c0aa
Reviewed-on: https://gerrit.instructure.com/68612
Tested-by: Jenkins
Reviewed-by: Cameron Matheson <1d572acbfa68c7c6e541c7b840d6b622e5c0dc91@instructure.com>
QA-Review: Ryan Allen <b65b638b3333142073650bd017e5f36609bed2c6@instructure.com>
Product-Review: Cosme Salazar <d37f5e06cd46b8fd23ce5553334e09ede5394232@instructure.com>

HotChalk/canvas-lms,roxolan/canvas-lms,redconfetti/canvas-lms,venturehive/canvas-lms,sfu/canvas-lms,venturehive/canvas-lms,grahamb/canvas-lms,instructure/canvas-lms,SwinburneOnline/canvas-lms,HotChalk/canvas-lms,sfu/canvas-lms,roxolan/canvas-lms,fronteerio/canvas-lms,sfu/canvas-lms,venturehive/canvas-lms,djbender/canvas-lms,fronteerio/canvas-lms,SwinburneOnline/canvas-lms,instructure/canvas-lms,redconfetti/canvas-lms,dgynn/canvas-lms,roxolan/canvas-lms,grahamb/canvas-lms,dgynn/canvas-lms,sfu/canvas-lms,matematikk-mooc/canvas-lms,sfu/canvas-lms,matematikk-mooc/canvas-lms,HotChalk/canvas-lms,roxolan/canvas-lms,instructure/canvas-lms,venturehive/canvas-lms,djbender/canvas-lms,dgynn/canvas-lms,fronteerio/canvas-lms,grahamb/canvas-lms,instructure/canvas-lms,sfu/canvas-lms,matematikk-mooc/canvas-lms,redconfetti/canvas-lms,SwinburneOnline/canvas-lms,djbender/canvas-lms,fronteerio/canvas-lms,redconfetti/canvas-lms,matematikk-mooc/canvas-lms,HotChalk/canvas-lms,djbender/canvas-lms,instructure/canvas-lms,grahamb/canvas-lms,SwinburneOnline/canvas-lms,dgynn/canvas-lms,instructure/canvas-lms,instructure/canvas-lms,sfu/canvas-lms,grahamb/canvas-lms