BugFix: GNSS HAL was not enabled at start

The mEnabled flag that is used to check if HAL enable is needed was not
set correctly to false at the start.

Bug: 124134653
Test: Current Tests Pass.
Change-Id: Ib76565431ee93419407df8d1de9714a0da138b3a

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

@@ -302,7 +302,7 @@ public class GnssLocationProvider extends AbstractLocationProvider implements
             MAX_RETRY_INTERVAL);
 
     // true if we are enabled, protected by this
-    private boolean mEnabled = true;
+    private boolean mEnabled;
 
     private boolean mShutdown;