Fix agents disconnecting in SUSPENDED state.

Network state is not changed to disconnected when a networkagent
is disconnected and network state is SUSPENDED.

So the function requiresClat return true. Clat is not stoped.

Bug: 277682237
Test: atest FrameworksNetTests
(cherry picked from https://android-review.googlesource.com/q/commit:fd5d3d90e1da7411104902ddfe859ebd0e4a02fb)
Merged-In: I5edfcf64aca5d2d34325d722dd29fab41bcf2600
Change-Id: I5edfcf64aca5d2d34325d722dd29fab41bcf2600

framework/src/android/net/NetworkInfo.java

@@ -333,6 +333,24 @@ public class NetworkInfo implements Parcelable {
         }
     }
 
+    /**
+     * Indicates whether this network is suspended.
+     * @deprecated Apps should instead use the
+     *             {@link android.net.ConnectivityManager.NetworkCallback} API to
+     *             learn about connectivity changes. See
+     *             {@link ConnectivityManager#registerDefaultNetworkCallback} and
+     *             {@link ConnectivityManager#registerNetworkCallback}. These will
+     *             give a more accurate picture of the connectivity state of
+     *             the device and let apps react more easily and quickly to changes.
+     * @hide
+     */
+    @Deprecated
+    public boolean isSuspended() {
+        synchronized (this) {
+            return mState == State.SUSPENDED;
+        }
+    }
+
     /**
      * Indicates whether network connectivity is possible. A network is unavailable
      * when a persistent or semi-persistent condition prevents the possibility

service/src/com/android/server/ConnectivityService.java

@@ -4526,7 +4526,7 @@ public class ConnectivityService extends IConnectivityManager.Stub
         // because they lost all their requests or because their score isn't good)
         // then they would disconnect organically, report their new state and then
         // disconnect the channel.
-        if (nai.networkInfo.isConnected()) {
+        if (nai.networkInfo.isConnected() || nai.networkInfo.isSuspended()) {
             nai.networkInfo.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED,
                     null, null);
         }

tests/unit/java/com/android/server/ConnectivityServiceTest.java

@@ -17949,7 +17949,6 @@ public class ConnectivityServiceTest {
         mCellAgent.expectDisconnected();
         waitForIdle();
-        // TODO (aosp/2583410): update following check to verifyClatdStop
-        verifyNeverClatdStop(null /* inOrder */, MOBILE_IFNAME);
+        verifyClatdStop(null /* inOrder */, MOBILE_IFNAME);
     }
 }