fix issue with transition after quiz is deleted

fixes CNVS-13401

- test plan
  - enable draft state and quiz stats
  - as a teacher
    - create a quiz
    - visit the quiz
    - delete the quiz
    - it should redirect you back to the list of quizzes

Change-Id: I266f9924a6aef1b2d298917da757314adecbbe44
Reviewed-on: https://gerrit.instructure.com/35943
Reviewed-by: Jason Madsen <jmadsen@instructure.com>
Tested-by: Jenkins <jenkins@instructure.com>
QA-Review: Trevor deHaan <tdehaan@instructure.com>
Product-Review: Derek DeVries <ddevries@instructure.com>