Replaced deprecated inline classes with JvmInline value classes in tests

compiler/testData/codegen/box/inlineClasses/functionNameMangling/overridingMethodInGenericClass.kt

@@ -1,10 +1,11 @@
-// !LANGUAGE: +InlineClasses
+// WITH_RUNTIME
 
 abstract class GenericBase<T> {
     abstract fun foo(x: T): T
 }
 
-inline class Str(val str: String)
+@JvmInline
+value class Str(val str: String)
 
 class Derived : GenericBase<Str>() {
     override fun foo(x: Str): Str = x