Resolve type aliases when looking for default arguments to actual methods.

Change-Id: I059093c1af32fcd7a2de36c25160c352d6f03a3c

compiler/testData/codegen/box/multiplatform/defaultArguments/typeAlias.kt

@@ -0,0 +1,20 @@
+// !LANGUAGE: +MultiPlatformProjects
+// WITH_RUNTIME
+// FILE: common.kt
+
+expect annotation class Foo(val z: String = "OK")
+
+// FILE: platform.kt
+
+actual typealias Foo = Foo2
+
+annotation class Foo2 (val z: String = "OK")
+
+@Foo
+fun test() {}
+
+fun box(): String {
+    test()
+
+    return "OK"
+}