feat(widgets): show calendar events on hover with pin on click (#2637) (#6081)

feat(widgets): show calendar events on hover with pin on click (#2637)

docs(widgets): update calendar interactions section for hover behavior

apps/docs/docs/widgets/calendar/index.mdx

@@ -63,7 +63,9 @@ import withoutIntegrations from './img/without-integrations.png';
 
 ### Interactions
 
-- View calendar events by clicking on the marked dates.
+- Hover over a marked date to preview its events in a popover.
+- Click on a marked date to pin the popover open (it will stay visible even after moving the mouse away).
+- Click the date again or click outside to close the pinned popover.
 
 ### Adding the widget