Fix testTtffWithNetwork timeout issue

There is no NLP in GSI project, but case testTtffWithNetwork still wait 2 minutes
for network location. This flow will run twice so waste 4 minutes of waiting time,
it's easy to cause case 5 minutes timeout failure.
Do not waiting for network location result if there is no NLP.

Bug: 225083104
Test: CtsLocationGnssTestCase
Change-Id: I2f13579bd79dea7ed83ce9cff7627094887633fb
(cherry picked from commit 05caa14e3df938a3afd147c698b851b866a91c9c)
diff --git a/tests/location/common/src/android/location/cts/common/TestLocationManager.java b/tests/location/common/src/android/location/cts/common/TestLocationManager.java
index 581a107..69a92b7 100644
--- a/tests/location/common/src/android/location/cts/common/TestLocationManager.java
+++ b/tests/location/common/src/android/location/cts/common/TestLocationManager.java
@@ -186,8 +186,9 @@
      * See {@code LocationManager#requestNetworkLocationUpdates}.
      *
      * @param locationListener location listener for request
+     * @return {@code true} if the network provider is valid, {@code false} otherwise.
      */
-    public void requestNetworkLocationUpdates(LocationListener locationListener) {
+    public boolean requestNetworkLocationUpdates(LocationListener locationListener) {
         if (mLocationManager.getProvider(LocationManager.NETWORK_PROVIDER) != null) {
             Log.i(TAG, "Request Network Location updates.");
             mLocationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER,
@@ -195,7 +196,9 @@
                 0 /* minDistance */,
                 locationListener,
                 Looper.getMainLooper());
+            return true;
         }
+        return false;
     }
 
     /**
diff --git a/tests/location/location_gnss/src/android/location/cts/gnss/GnssTtffTests.java b/tests/location/location_gnss/src/android/location/cts/gnss/GnssTtffTests.java
index c869fee..2c6be79 100644
--- a/tests/location/location_gnss/src/android/location/cts/gnss/GnssTtffTests.java
+++ b/tests/location/location_gnss/src/android/location/cts/gnss/GnssTtffTests.java
@@ -129,8 +129,9 @@
     TestLocationListener networkLocationListener
         = new TestLocationListener(LOCATION_TO_COLLECT_COUNT);
     // fetch the networklocation first to make sure the ttff is not flaky
-    mTestLocationManager.requestNetworkLocationUpdates(networkLocationListener);
-    networkLocationListener.await();
+    if (mTestLocationManager.requestNetworkLocationUpdates(networkLocationListener)) {
+        networkLocationListener.await();
+    }
 
     TestGnssStatusCallback testGnssStatusCallback =
         new TestGnssStatusCallback(TAG, STATUS_TO_COLLECT_COUNT);