Describe the bug
As of #698, the dispatchExternalPointerEvent call will not render crosshairs for external tooltips. Prior to this change this was the default behavior.

To Reproduce
Steps to reproduce the behavior:

1. Go to http://localhost:9001/?path=/story/interactions--cursor-update-action
2. Change the value of visible on the second chart to false
3. Notice the absence of an external tooltip on either chart

Expected behaviour
If a dispatchExternalPointerEvent is used, show the crosshairs for the respective pointer value. Even when externalPointerEvents.tooltip.visible is false. When this is false, only the tooltip should be hidden.

Screenshots

Kibana Cross Issues
elastic/kibana#76954