Value classes: Allow unsigned arrays in annotations

including varargs, apparently.
So, we allow unsigned types and unsigned arrays in annotations,
but disallow user-defined inline classes.
 #KT-23816 Fixed

compiler/testData/codegen/bytecodeListing/inlineClasses/annotationGetters.txt

@@ -0,0 +1,16 @@
+@java.lang.annotation.Retention
+@kotlin.Metadata
+public annotation class Ann {
+    // source: 'annotationGetters.kt'
+    public abstract method u(): int
+    public abstract method uba(): byte[]
+    public abstract method uia(): int[]
+    public abstract method ula(): long[]
+    public abstract method usa(): short[]
+}
+
+@kotlin.Metadata
+public final class AnnotationGettersKt {
+    // source: 'annotationGetters.kt'
+    public final static @Ann method foo(): void
+}