fixes FOO-1912
flag = none
== test plan
go to account settings -> reports and inspect the description of one of
the reports that has content that can be scrolled horizontally (e.g. a
big table) then verify you can scroll using your keyboard arrow keys
Change-Id: Ief4e582b8f0fad72adc43037265ac62cf828a320
Reviewed-on: https://gerrit.instructure.com/c/canvas-lms/+/265633
Tested-by: Service Cloud Jenkins <svc.cloudjenkins@instructure.com>
Reviewed-by: Simon Williams <simon@instructure.com>
QA-Review: Simon Williams <simon@instructure.com>
Product-Review: Simon Williams <simon@instructure.com>
7ea0ef5b79