Fix delegateFilter reinitialization

Otherwise IDEA marks all test as skipped

compiler/tests-common/tests/org/jetbrains/kotlin/test/JUnit3RunnerWithInnersForJPS.java

@@ -61,7 +61,7 @@ public class JUnit3RunnerWithInnersForJPS extends Runner implements Filterable,
 
     @Override
     public void filter(Filter filter) throws NoTestsRemainException {
-        delegateRunner = new JUnit38ClassRunner(klass);
+        initialize();
         delegateRunner.filter(filter);
     }