Fix EvaluateTests for strings

compiler/testData/evaluate/constant/strings.kt

@@ -4,29 +4,29 @@ enum class MyEnum {
     A
 }
 
-// val prop1: "2"
+// val prop1: \"2\"
 val prop1 = "${1 + 1}"
 
 // val prop2: null
 val prop2 = "myEnum=${MyEnum.A}"
 
-// val prop3: "1"
+// val prop3: \"1\"
 val prop3 = "${1}"
 
-// val prop4: null
+// val prop4: \"null\"
 val prop4 = "${null}"
 
-// val prop5: "1.0"
+// val prop5: \"1.0\"
 val prop5 = "${1.toFloat()}"
 
-// val prop6: "1.0"
+// val prop6: \"1.0\"
 val prop6 = "${1.0}"
 
 // val prop7: null
 val prop7 = "${javaClass<Int>()}"
 
-// val prop8: "a1.0"
+// val prop8: \"a1.0\"
 val prop8 = "a${1.toDouble()}"
 
-// val prop9: "ab"
+// val prop9: \"ab\"
 val prop9 = "a" + "b"