Composing tiles from the GeoJSON features is an expensive operation that might block UI thread on updating the `GeoJsonSource` with the new data. This change moves tile composing to the background thread and thus unblocks the UI thread.
Composing tiles from the GeoJSON features is an expensive operation that might block UI thread on updating the `GeoJsonSource` with the new data. This change moves tile composing to the background thread and thus unblocks the UI thread.