Add getClusterExpansionZoom to ShapeSource

[janicduplessis]

This allows using the mapbox sdk to get the zoom needed to expand a cluster by adding getClusterExpansionZoom to instances of ShapeSource.

The code is mostly adapted from a similar method features on ShapeSource.

Tested these changes in an app on iOS and android.

const source = React.useRef(null);

...

<MapboxGL.ShapeSource
  ref={source}
  onPress={async (e) => {
    const feature = e.features[0];
    if (feature.properties?.cluster) {
      const zoom = await source.current.getClusterExpansionZoom(
        feature.properties.cluster_id,
      );
      // use zoom
    }
  }}
  cluster
  clusterMaxZoomLevel={13}
  clusterRadius={40}
/>

[ferdicus]

Thanks @janicduplessis 🙇🏿

[LukeLaScala]

This seems to be broken on the latest build. I'm getting source.current.getClusterExpansionZoom is not a function using the code provided above. Is there somewhere else to report this bug?

[ferdicus]

This seems to be broken on the latest build. I'm getting source.current.getClusterExpansionZoom is not a function using the code provided above. Is there somewhere else to report this bug?

@LukeLaScala, feel free to open an issue ticket, but please follow the guidelines

Thanks 🙇🏿

[natedx]

I am going to open one, it is broken for me too!