don't let some inner JDK classes be above my precious CompletionType in lookups

java/java-tests/testData/codeInsight/completion/normalSorting/PreferTopLevelClasses.java

@@ -0,0 +1,10 @@
+public class TestClass {
+    public TestClass create(XxY<caret>) {
+    }
+}
+
+class XxxYyy {}
+
+class Aaa {
+    static class XxzYyy{}
+}