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

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

@@ -1,3 +1,4 @@
+// TARGET_BACKEND: JVM
 package test
 
 class ClassVarParams(
@@ -7,4 +8,4 @@ class ClassVarParams(
   protected var pr4: java.util.Date,
   public var pr5 : Any,
   pr6: Object) {
-}
+}