Improve accessibility of navigation components

[connor-baer]

Purpose

An accessibility audit of the navigation components revealed a large number of issues. This PR addresses issues related to the markup of the components, a separate PR will tackle focus-related issues.

Approach and changes

• Properly hide presentational icons from the accessibility tree
• Fix HTML validation errors in the navigation components
• Restore the focus styles of the utility links and profile menu in the TopNavigation
• Include the profile information in the profile menu button

Definition of done

• Development completed
• Reviewers assigned
• Unit and integration tests
• Meets minimum browser support
• Meets accessibility requirements

[changeset-bot]

🦋 Changeset detected

Latest commit: 4f74de8

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@sumup/circuit-ui	Patch

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Name	Status	Preview	Comments	Updated (UTC)
oss-circuit-ui	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Nov 14, 2023 3:19pm

[codecov]

Codecov Report

Merging #2297 (4f74de8) into main (c776399) will increase coverage by 0.00%.
The diff coverage is 98.11%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2297   +/-   ##
=======================================
  Coverage   97.15%   97.15%           
=======================================
  Files         251      251           
  Lines       19862    19889   +27     
  Branches     1224     1225    +1     
=======================================
+ Hits        19297    19324   +27     
  Misses        551      551           
  Partials       14       14           

Files	Coverage Δ
packages/circuit-ui/components/Field/Field.tsx	98.64% <100.00%> (ø)
...mponents/NotificationInline/NotificationInline.tsx	99.01% <100.00%> (ø)
...components/NotificationToast/NotificationToast.tsx	100.00% <100.00%> (ø)
packages/circuit-ui/components/Popover/Popover.tsx	99.72% <100.00%> (ø)
...components/DesktopNavigation/DesktopNavigation.tsx	100.00% <100.00%> (ø)
...ation/components/SecondaryLinks/SecondaryLinks.tsx	100.00% <100.00%> (ø)
...ponents/Sidebar/components/Separator/Separator.tsx	100.00% <100.00%> (ø)
...ckages/circuit-ui/components/Skeleton/Skeleton.tsx	100.00% <100.00%> (ø)
...cuit-ui/components/TopNavigation/TopNavigation.tsx	100.00% <100.00%> (ø)
...pNavigation/components/ProfileMenu/ProfileMenu.tsx	100.00% <100.00%> (ø)
... and 2 more