KT-7819 Borrow tests for non-local returns from JVM backend

compiler/testData/codegen/boxInline/nonLocalReturns/kt8948v2.kt

@@ -13,6 +13,8 @@ inline fun foo(f: () -> Unit) {
 
 // FILE: 2.kt
 
+// TODO: enabled when KT-6397 gets fixed
+// TARGET_BACKEND: JVM
 import test.*
 
 var p = "fail"

compiler/testData/codegen/boxInline/nonLocalReturns/tryFinally/exceptionTable/synchonized.kt

@@ -21,7 +21,7 @@ fun call(): String {
 }
 
 inline fun nonLocal(): String {
-    mysynchronized(Object()) {
+    mysynchronized("__LOCK__") {
         return "nonLocal"
     }
     return "local"

compiler/testData/codegen/boxInline/nonLocalReturns/tryFinally/variables/kt7792.kt

@@ -21,7 +21,7 @@ fun monitorCall(lock: Any) {
 import test.*
 
 public class ClassA {
-    val LOCK = Object()
+    val LOCK = "__LOCK__"
 
     var result = "fail"