Support reflection tests on Android

compiler/testData/codegen/box/objects/kt3238.kt

@@ -1,6 +1,7 @@
 // IGNORE_BACKEND: JS_IR
 // TODO: muted automatically, investigate should it be ran for JS or not
 // IGNORE_BACKEND: JS, NATIVE
+// WITH_RUNTIME
 
 object Obj {
     class Inner() {
@@ -9,7 +10,7 @@ object Obj {
 }
 
 fun box() : String {
-    val klass = Class.forName("Obj\$Inner")!!
+    val klass = Obj.Inner::class.java
     val cons = klass.getConstructors()!![0]
     val inner = cons.newInstance(*(arrayOfNulls<String>(0) as Array<String>))
     return "OK"