[accessibility] Interactive markers should be role="button"

[Malvoz]

Interactive markers (e.g. markers that bind to popups) are focusable and actionable elements, and should have appropriate semantics (i.e. role="button").

Related WCAG 2.1 Success Criterion: 4.1.2 Name, Role, Value (this issue is to address the Role part of the Success Criterion for interactive markers).

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(The same issue was also reported with MapBox: mapbox/mapbox-gl-js#11031.)

[github-actions]

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[github-actions]

This issue was closed because it has been stalled for 30 days with no activity.