Don't add LOCAL_NETWORK as forbidden capability

This causes the module to crash on rollback because the current
production code does not consider LOCAL_NETWORK to be a valid
capability.

Change-Id: Idf57d72c384b41b483098c4c302738072ebf7f90
Test: TH
Fix: 313030307

framework/src/android/net/NetworkRequest.java

@@ -290,7 +290,10 @@ public class NetworkRequest implements Parcelable {
          * Therefore these capabilities are only in NetworkRequest.
          */
         private static final int[] DEFAULT_FORBIDDEN_CAPABILITIES = new int[] {
-            NET_CAPABILITY_LOCAL_NETWORK
+            // TODO(b/313030307): this should contain NET_CAPABILITY_LOCAL_NETWORK.
+            // We cannot currently add it because doing so would crash if the module rolls back,
+            // because JobScheduler persists NetworkRequests to disk, and existing production code
+            // does not consider LOCAL_NETWORK to be a valid capability.
         };
 
         private final NetworkCapabilities mNetworkCapabilities;