disableFollowMode method
Unlocks camera so user can drag freely again.
Stops Geolocator stream to conserve battery.
Implementation
Future<void> disableFollowMode() async {
_mode = TrackingMode.none;
modeNotifier.value = _mode;
await _stopPositionStream();
await mapController.updateMyLocationTrackingMode(
MyLocationTrackingMode.none,
);
}