don't erase constructor arguments when choosing a new class name with tab (IDEA-61806)

java/java-tests/testData/codeInsight/completion/normal/ClassNameWithInnersTab_after.java

@@ -0,0 +1,16 @@
+public class TestClass {
+
+    public TestClass create() {
+        final int value = 1;
+        return new Xxx<caret>(value);
+    }
+}
+
+class Xxx {
+    private Xxx(String x) {
+    }
+
+    class Yyy {
+
+    }
+}