Supported star projection in alternative signatures.

compiler/testData/loadJava/kotlinSignature/StarProjection.kt

@@ -0,0 +1,7 @@
+package test
+
+public final class StarProjection: Object() {
+    public final fun foo(): MyClass<*> = throw UnsupportedOperationException()
+
+    public trait MyClass<T: CharSequence?>: Object
+}