fix headingindicator bug (rnmapbox#3837)

Author: cixio

src/components/UserLocation.tsx

@@ -53,7 +53,7 @@ const normalIcon = (
     style={layerStyles.normal.foreground}
   />,
   ...(showsUserHeadingIndicator && typeof heading === 'number'
-    ? [HeadingIndicator({ heading, key: 'mapboxUserLocationHeadingIndicator' })]
+    ? [<HeadingIndicator heading={heading} key="mapboxUserLocationHeadingIndicator" />]
     : []),
 ];