New J2K: Fix existing test data

j2k/testData/fileOrElement/newClassExpression/genericClassInvocation.new.kt

@@ -1,5 +1,5 @@
 internal class User {
     fun main() {
-        val list: List<String?> = ArrayList()
+        val list: List<String> = ArrayList()
     }
 }

j2k/testData/fileOrElement/newClassExpression/newListAndNewMember.new.kt

@@ -1,10 +1,12 @@
 package org.test
 
+import java.util.ArrayList
+
 internal class Member
 
 internal class User {
     fun main() {
-        val members: MutableList<Member?> = ArrayList()
+        val members: MutableList<Member> = ArrayList()
         members.add(Member())
     }
 }