Forget to filter metaclass attributes by name while resolving class type member. This bug was introduced in PY-19702-related changes.

python/testSrc/com/jetbrains/python/inspections/Py3UnresolvedReferencesInspectionTest.java

@@ -100,6 +100,11 @@ public class Py3UnresolvedReferencesInspectionTest extends PyTestCase {
     doTest();
   }
 
+  // PY-19702
+  public void testNonexistentMetaclassAttribute() {
+    doTest();
+  }
+
   public void testMetaclassStub() {
     doMultiFileTest("a.py");
     final Project project = myFixture.getProject();