Minor, restructure reflection tests a little

To allow their usage in https://github.com/udalov/kotlin-obfuscation-test-app

compiler/testData/codegen/box/reflection/classes/jvmNameOfStandardClasses.kt

@@ -0,0 +1,27 @@
+// TODO: muted automatically, investigate should it be ran for JS or not
+// IGNORE_BACKEND: JS, NATIVE
+
+// WITH_REFLECT
+
+import kotlin.test.assertEquals
+import kotlin.reflect.jvm.jvmName
+
+fun box(): String {
+    assertEquals("java.lang.Object", Any::class.jvmName)
+    assertEquals("int", Int::class.jvmName)
+    assertEquals("[I", IntArray::class.jvmName)
+    assertEquals("java.util.List", List::class.jvmName)
+    assertEquals("java.util.List", MutableList::class.jvmName)
+    assertEquals("java.lang.String", String::class.jvmName)
+    assertEquals("java.lang.String", java.lang.String::class.jvmName)
+
+    assertEquals("[Ljava.lang.Object;", Array<Any>::class.jvmName)
+    assertEquals("[Ljava.lang.Integer;", Array<Int>::class.jvmName)
+    assertEquals("[[Ljava.lang.String;", Array<Array<String>>::class.jvmName)
+
+    assertEquals("java.util.Date", java.util.Date::class.jvmName)
+    assertEquals("kotlin.jvm.internal.Ref\$ObjectRef", kotlin.jvm.internal.Ref.ObjectRef::class.jvmName)
+    assertEquals("java.lang.Void", java.lang.Void::class.jvmName)
+
+    return "OK"
+}