report(accessibility): add heading role to report category gauges #9422
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Add role="heading" with aria-level="2" to the report category gauges so screen readers can easily identify and navigate the report using headings. Level 2 was chosen because [Accessibility Insights recommends against multiple level 1 headings in the same section of a document][1]. This meets the following WCAG 2.1 success criteria 1.3.1 Info and Relationships https://www.w3.org/WAI/WCAG21/quickref/#info-and-relationships 2.4.10 Section Headings https://www.w3.org/WAI/WCAG21/quickref/#section-headings [1]: https://github.com/microsoft/accessibility-insights-web/blob/900c301e/src/content/adhoc/headings/guidance.tsx#L45-L54
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Summary
Add role="heading" with aria-level="2" to the report category gauges so
screen readers can easily identify and navigate the report using headings.
Level 2 was chosen because Accessibility Insights recommends against
multiple level 1 headings in the same section of a document.
Screenshot of gauges in the devtools accessibility tree
Screenshot of NVDA Element List
This meets the following WCAG 2.1 success criteria
1.3.1 Info and Relationships https://www.w3.org/WAI/WCAG21/quickref/#info-and-relationships
2.4.10 Section Headings https://www.w3.org/WAI/WCAG21/quickref/#section-headings
Related Issues/PRs
#7575