Java: Don't fold too complex expressions when extracting method (IDEA-175221, IDEA-167255)

java/java-tests/testData/refactoring/extractMethod/CallOn2DimArrayElement_after.java

@@ -0,0 +1,9 @@
+class C {
+    int foo(String[][] vars, int i, int j) {
+        return newMethod(vars[i][j]);
+    }
+
+    private int newMethod(String s) {
+        return s.length();
+    }
+}