mouseActionButton = function (mapBrowserEvent) {
  const originalEvent = mapBrowserEvent.originalEvent;
  return (
    'pointerId' in originalEvent &&
    originalEvent.button == 0 &&
    !(WEBKIT && MAC && originalEvent.ctrlKey)
  );
}
Return `true` if the event has an "action"-producing mouse button.

By definition, this includes left-click on windows/linux, and left-click
without the ctrl key on Macs.

@param {import("../MapBrowserEvent.js").default} mapBrowserEvent Map browser event.
@return {boolean} The result.