[Maps] Unable to create filters in dashboard

[nreese]

#44503 changed the embeddable API and did not update Maps usage of the API.

Need to change

https://github.com/elastic/kibana/blob/master/x-pack/legacy/plugins/maps/public/embeddable/map_embeddable.js#L136

to

  addFilters = filters => {
    start.executeTriggerActions(APPLY_FILTER_TRIGGER, {
      embeddable: this,
      filters,
    });
  }

[elasticmachine]

Pinging @elastic/kibana-gis

[nreese]

There are functional tests that would have prevented this regression, but they were disabled by #41272

cc @streamich