8168789: ModuleReader.list and ModuleFinder.of update

Reviewed-by: mchung

langtools/src/jdk.jdeps/share/classes/com/sun/tools/jdeps/JdepsConfiguration.java

@@ -396,6 +396,11 @@ public class JdepsConfiguration implements AutoCloseable {
                                     ? Optional.of(uri) : Optional.empty();
                             }
 
+                            @Override
+                            public Stream<String> list() {
+                                return Stream.empty();
+                            }
+
                             @Override
                             public void close() throws IOException {
                             }