Add support for creating Firo masternodes.

Author: cassandras-lies

lib/pages/address_book_views/address_book_view.dart

@@ -74,7 +74,7 @@ class _AddressBookViewState extends ConsumerState<AddressBookView> {
         ref
             .read(addressBookFilterProvider)
             .addAll(
-              coins.where((e) => e.network != CryptoCurrencyNetwork.test),
+              coins.where((e) => !e.network.isTestNet),
               false,
             );
       }