Fix tests after phase move: constant folding happens later

Author: liufengyun

tests/init/neg/constant.scala

@@ -1,4 +1,4 @@
 class A {
   final val a = b
-  final val b = 4
+  final val b = 4    // error
 }

tests/init/neg/final-fields.scala

@@ -22,7 +22,7 @@ object Test0 extends U {
 object Test1 extends U {
   final val f1 = 1
   final val f3 = f1 + f2
-  final val f2 = 2
+  final val f2 = 2           // error: but constant folding avoided the issue
   val f4: 3 = f3
 
 

tests/init/neg/global-cycle7.scala

@@ -14,5 +14,5 @@ abstract class TokensCommon {
 
 object JavaTokens extends TokensCommon {
   final def maxToken: Int = DOUBLE
-  final val DOUBLE = 188
+  final val DOUBLE = 188                   // error: but constant folding avoided the issue
 }