message: improvement(backend): update markers if visiblility has changed
diff: @@ -151,7 +151,7 @@ const handleGroup = async (documents: ExistingDocuments, group: MutualAidWikiGro
  const doc = documents.get(group.id);
  if (doc) {
  const existingMarker = doc.data();
  - if (isEqual(existingMarker.source?.data, group)) {
  + if (isEqual(existingMarker.source?.data, group) && existingMarker.visible === marker.visible) {
  return 'existing';
  }
  await MARKER_COLLECTION.doc(doc.id).set(marker);
  