[Test] Set JVM target backend for load compiled tests which use JDK classes

compiler/testData/loadJava/compiledKotlin/prop/defaultAccessors/ClassVal.kt

@@ -1,4 +1,5 @@
-//ALLOW_AST_ACCESS
+// TARGET_BACKEND: JVM
+// ALLOW_AST_ACCESS
 package test
 
 class ClassVal() {
@@ -11,4 +12,4 @@ class ClassVal() {
     protected val property4: String = { "" }()
 
     public val property5: Int = { 1 }()
-}
+}