fix(a11y): vertical nav - remove incorrect usage of links at top level for the vertical nav story

[andyfeds]

PR Checklist

Please check if your PR fulfills the following requirements:

• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)
• If applicable, have a visual design approval

PR Type

What kind of change does this PR introduce?

• Bugfix
• Feature
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Build related changes
• CI related changes
• Documentation content changes
• Other... Please describe:

What is the current behavior?

This is a bug in the vertical nav routing story, and not the vertical nav component. Links are used in the top level for the nav with routing story which results in an independent accordion icon button being added to the DOM that has state but no label.
The top-level entries should not be links. That usage is incorrect and breaks the component.

Issue Number: CDE-1390

What is the new behavior?

Does this PR introduce a breaking change?

• Yes
• No

Other information

This will fix related bug : CDE-1391

[github-actions]

👋 @andyfeds,

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[github-actions]

This PR introduces visual changes: 62e6d87
If these changes are intended and correct, please cherry-pick the above commit to this PR.

git checkout a11y/CDE-1390
git fetch https://github.com/vmware-clarity/ng-clarity.git 62e6d879af032854daed5f6e91050fed48c18e5b
git cherry-pick 62e6d879af032854daed5f6e91050fed48c18e5b
git push

[github-actions]

This PR introduces visual changes: c163f9c
If these changes are intended and correct, please cherry-pick the above commit to this PR.

git checkout a11y/CDE-1390
git fetch https://github.com/vmware-clarity/ng-clarity.git c163f9c246f81789b7e760c841b02115a0863707
git cherry-pick c163f9c246f81789b7e760c841b02115a0863707
git push

[github-actions]

Hi there 👋, this is an automated message. To help Clarity keep track of discussions, we automatically lock closed PRs after 14 days. Please look for another open issue or open a new issue with updated details and reference this one as necessary.