Prevent startNavigating() call when GPS is off

When system comes back from idle state,
GnssLocationProvider invokes startNavigating()
even when GPS is turned off in settings.

Bug: 29512509
Change-Id: Ifcc6a06d698f65f868d18244f7166663ab57f57e
CRs-Fixed: 1022372

services/core/java/com/android/server/location/GnssLocationProvider.java

@@ -1192,7 +1192,7 @@ public class GnssLocationProvider implements LocationProviderInterface {
         }
 
         if (DEBUG) Log.d(TAG, "setRequest " + mProviderRequest);
-        if (mProviderRequest.reportLocation && !mDisableGps) {
+        if (mProviderRequest.reportLocation && !mDisableGps && isEnabled()) {
             // update client uids
             updateClientUids(mWorkSource);