This comes from FlowingCode/GoogleMapsAddon#149

On desktop devices, a right-click on a Google Map Marker triggers the rightclick event as expected.
On mobile devices (Android/iOS), there is no native right-click equivalent. As a result, the rightclick event is never triggered when tapping/holding a marker.

Expected behavior

• A touch-and-hold gesture on a marker should trigger the same event (google-map-marker-rightclick) as a desktop right-click.
• Desktop behavior should remain unchanged.