refs INTEROP-8003
fixes INTEROP-8038
flag = none
Test plan:
Launch the LTI 1.3 test tool, and return content items in the assignment
selection, and editor placements.
Change-Id: Ifaf98a4a6fc76a987c43cc1240e45d85ca02afda
Reviewed-on: https://gerrit.instructure.com/c/canvas-lms/+/314865
Tested-by: Service Cloud Jenkins <svc.cloudjenkins@instructure.com>
Product-Review: Paul Gray <paul.gray@instructure.com>
Reviewed-by: Steve Mcgee <steve.mcgee@instructure.com>
Reviewed-by: Xander Moffatt <xmoffatt@instructure.com>
QA-Review: Xander Moffatt <xmoffatt@instructure.com>