Minor. Add more tests

compiler/testData/codegen/box/inlineClasses/kt27140Generic.kt

@@ -0,0 +1,14 @@
+// WITH_STDLIB
+// WORKS_WHEN_VALUE_CLASS
+// LANGUAGE: +ValueClasses, +GenericInlineClassParameter
+
+OPTIONAL_JVM_INLINE_ANNOTATION
+value class Z<T: Int>(private val i: T) {
+    fun toByteArray() = ByteArray(1) { i.toByte() }
+}
+
+fun box(): String {
+    val z = Z(42)
+    if (z.toByteArray()[0].toInt() != 42) throw AssertionError()
+    return "OK"
+}