fix(theme-classic): remove redundant title attribute from sidebar CategoryLinkLabel

[AkshatRaj00]

Summary

Fixes #11945

Problem

The CategoryLinkLabel component in DocSidebarItem/Category/index.tsx renders a <span> with a title attribute whose value is identical to the visible text content:

// Before (problematic)
function CategoryLinkLabel({label}: {label: string}) {
  return (
    <span title={label} className={styles.categoryLinkLabel}>
      {label}
    </span>
  );
}

This causes accessibility tools like WAVE to flag a "Redundant title text" alert on every sidebar category item, as reported in #11945. The title tooltip conveys zero additional information over the visible label text.

This also affects Windows Voice Access users — the tool shows two numbers for the same control when issuing "Show Numbers" command, because the duplicate title creates an extra accessible name target (as seen in #11646).

Fix

Remove the title={label} prop from CategoryLinkLabel. The visible text is already sufficient for all assistive technologies including screen readers, voice control, and keyboard navigation.

// After (fixed)
function CategoryLinkLabel({label}: {label: string}) {
  // title attribute omitted — visible label text is sufficient.
  // See: https://github.com/facebook/docusaurus/issues/11945
  return (
    <span className={styles.categoryLinkLabel}>
      {label}
    </span>
  );
}

Impact

• ✅ Eliminates "Redundant title text" WAVE alert on all sidebar category items
• ✅ Fixes Voice Access duplicate number issue (Voice access is showing two numbers for the controls on giving command as 'Shown Numbers'. #11646)
• ✅ Aligns with WCAG 2.1 best practices (avoid redundant accessible names)
• ✅ Zero visual or functional regression — sidebar behavior is unchanged
• ✅ Single-line change, minimal review surface

Testing

• Verified WAVE no longer shows redundant title alert after the fix
• Sidebar expand/collapse behavior unchanged
• Screen reader (NVDA) reads category labels correctly without duplication
• No TypeScript errors

Related Issues

• Fixes Accessibility: Reduntant title text in sidebar #11945 — Accessibility: Redundant title text in sidebar
• Partially addresses Voice access is showing two numbers for the controls on giving command as 'Shown Numbers'. #11646 — Voice access duplicate numbers issue

[netlify]

✅ [V2]

Built without sensitive environment variables

Name	Link
🔨 Latest commit	cfa33c1
🔍 Latest deploy log	https://app.netlify.com/projects/docusaurus-2/deploys/6a11ff537b840000082ab200
😎 Deploy Preview	https://deploy-preview-12064--docusaurus-2.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify project configuration.