fix reading of jump to today link
fix reading of jump to today link

fixes CNVS-28064

Test Plan:
- In Safari with VoiceOver, navigate to the Syllabus page of a course
- Press ctrl+option+cmd+H to jump to the H1 heading
- Press ctrl+option+right arrow a few times to move
  forward through the page content
- Note that the Jump to Today link was focused

Change-Id: Iefe3cc3bb00e603ff24a671370db8b82fdd50277
Reviewed-on: https://gerrit.instructure.com/75867
Reviewed-by: Chris Hart <b82b40b84a2f06957ec9caf1768340bd6b929cc4@instructure.com>
Tested-by: Jenkins
QA-Review: Deepeeca Soundarrajan <5bcd4b623f00b7fc2942cd1c65c245b30a48a61f@instructure.com>
Product-Review: Steven Burnett <a0b450117c5d20a22d5c4d52bb8ae13adee003d8@instructure.com>

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