Fix ConstantValue-related testData for loadJava tests

compiler/testData/loadJava/compiledKotlin/prop/Constants.kt

@@ -1,19 +1,18 @@
 //ALLOW_AST_ACCESS
 package test
 
-val b: Byte = 100
-val b1: Byte = 1
-val s: Short = 20000
-val s1: Short = 1
-val i: Int = 2000000
-val i1: Short = 1
-val l: Long = 2000000000000L
-val l1: Long = 1
-val f: Float = 3.14f
-val d: Double = 3.14
-val bb: Boolean = true
-val c: Char = '\u03c0' // pi symbol
-val MAX_HIGH_SURROGATE: Char = '\uDBFF'
-val nl = '\n'
-
-val str: String = ":)"
+const val b: Byte = 100
+const val b1: Byte = 1
+const val s: Short = 20000
+const val s1: Short = 1
+const val i: Int = 2000000
+const val i1: Short = 1
+const val l: Long = 2000000000000L
+const val l1: Long = 1
+const val f: Float = 3.14f
+const val d: Double = 3.14
+const val bb: Boolean = true
+const val c: Char = '\u03c0' // pi symbol
+const val MAX_HIGH_SURROGATE: Char = '\uDBFF'
+const val nl = '\n'
+const val str: String = ":)"