No way to close ContextMenuOverlayElement (-s)

[krissvaa]

ContextMenuOverlayElement does not have a method to close the overlay.

Use case: Opening one context menu after another does not close the other context menus.

Workaround after using #4752 as base:

public void close() {  
  getCommandExecutor().executeScript("arguments[0].close();", this);
}