facebook#11587 invoke error for getCurrentLocation

Summary:
It started with facebook#11587, which reported that the error returned by `getCurrentLocation` did not match the spec.

This resulted in PR facebook#11723, which did not get merged because it was said by ide and mkonicek that simply emitting the error will cause it to hang since the `error` callback was never invoked.

However, it seems like somewhere along the way PR facebook#13140 got merged in which did exactly that.

Since it now matches the spec, turning off location services on Android then running the below example code from [Geolocation](https://developer.mozilla.org/en-US/docs/Web/API/Geolocation/getCurrentPosition) docs errors out correctly.

```javascript
var options = {
  enableHighAccuracy: true,
  timeout: 5000,
  maximumAge: 0
};

function success(pos) {
  var crd = pos.coords;

  console.log('Your current po
Closes facebook#13306

Differential Revision: D4833377

Pulled By: ericvicenti

fbshipit-source-id: dbea5948790a3f521751a0cc0a25f0e323b30667

Author: daose

ReactAndroid/src/main/java/com/facebook/react/modules/location/LocationModule.java

@@ -123,7 +123,9 @@ public void getCurrentPosition(
           (LocationManager) getReactApplicationContext().getSystemService(Context.LOCATION_SERVICE);
       String provider = getValidProvider(locationManager, locationOptions.highAccuracy);
       if (provider == null) {
-        emitError(PositionError.PERMISSION_DENIED, "No location provider available.");
+        error.invoke(PositionError.buildError(
+                PositionError.PERMISSION_DENIED,
+                "No location provider available."));
         return;
       }
       Location location = locationManager.getLastKnownLocation(provider);