message: fix(map): minor improvements to handle mutualaid.wiki dataset
  account for markers without a radius
  group clusters together a bit more eagerly
diff: @@ -280,7 +280,7 @@ class MapComponent extends React.Component<Props, {}> {
  ignoreHidden: true,
  zoomOnClick: false,
  averageCenter: true,
  - gridSize: 30,
  + gridSize: 70,
  });
  const m: MapInfo = {
  @@ -312,6 +312,9 @@ class MapComponent extends React.Component<Props, {}> {
  const bottomLeft = mapBoundingBox.getSouthWest();
  const markerPosition = marker.getPosition();
  const radius = info.info.loc.serviceRadius;
  + if (!radius) {
  + return;
  + }
  // Now compare the distance from the marker to corners of the box;
  if (markerPosition) {
  @@ -391,7 +394,7 @@ class MapComponent extends React.Component<Props, {}> {
  for (const marker of clusterMarkers) {
  // Update maxMarker to higher value if found.
  const info = this.getMarkerInfo(marker);
  - if (info) {
  + if (info?.info.loc.serviceRadius) {
  if (
  !maxMarker ||
  maxMarker.serviceRadius < info.info.loc.serviceRadius
  