getExportedCustomBubblingEventTypeConstants

Returns a map of config data passed to JS that defines eligible events that can be placed on native views. This should return bubbling directly-dispatched event types and specify what names should be used to subscribe to either form (bubbling/capturing).

Returned map should be of the form:

{
  "onTwirl": {
    "phasedRegistrationNames": {
      "bubbled": "onTwirl",
      "captured": "onTwirlCaptured"
    }
  }
}