Integrations: accessibility bug fixes

Created by: tjkandala

Umbrella issue for bugs revealed by accessibility audits for extensions on the file/search pages (#34776)

• PR: #36917
  • #36752 (closed)
• PR: #37507
  • #36753 (closed)
  • #36849 (closed)
• PR: #37518
  • #36850 (closed)
  • #36852 (closed)
  • #36854 (closed)
  • #36855 (closed)
• PR: #37523
  • #36858 (closed)
  • #36859 (closed)
  • #36861 (closed)
• #36857 (closed)