Several built-in functions are not `public`, but instead live in the `AS3` namespace. This moves those functions there.

In practice not many movies will care about this, because the `AS3` namespace is open by default. You could opt-out of that, and I suppose that was there for using existing ES3 code in AS3 projects. ES4 would have had a similar ES4 namespace, which "JavaScript 2.0" code would need to opt into. Of course, ES4/JS2 never happened, so we just have this weird historical quirk here.

core/src/avm2/globals/function.rs

@@ -53,7 +53,7 @@ pub fn create_proto<'gc>(gc_context: MutationContext<'gc, '_>, proto: Object<'gc
 
     function_proto.install_method(
         gc_context,
-        QName::new(Namespace::public_namespace(), "call"),
+        QName::new(Namespace::as3_namespace(), "call"),
         0,
         FunctionObject::from_builtin(gc_context, call, function_proto),
     );

core/src/avm2/globals/object.rs

@@ -167,19 +167,19 @@ pub fn fill_proto<'gc>(
     );
     object_proto.install_method(
         gc_context,
-        QName::new(Namespace::public_namespace(), "hasOwnProperty"),
+        QName::new(Namespace::as3_namespace(), "hasOwnProperty"),
         0,
         FunctionObject::from_builtin(gc_context, has_own_property, fn_proto),
     );
     object_proto.install_method(
         gc_context,
-        QName::new(Namespace::public_namespace(), "isPrototypeOf"),
+        QName::new(Namespace::as3_namespace(), "isPrototypeOf"),
         0,
         FunctionObject::from_builtin(gc_context, is_prototype_of, fn_proto),
     );
     object_proto.install_method(
         gc_context,
-        QName::new(Namespace::public_namespace(), "propertyIsEnumerable"),
+        QName::new(Namespace::as3_namespace(), "propertyIsEnumerable"),
         0,
         FunctionObject::from_builtin(gc_context, property_is_enumerable, fn_proto),
     );

core/src/avm2/names.rs

@@ -59,6 +59,10 @@ impl Namespace {
         Namespace::Package("".to_string())
     }
 
+    pub fn as3_namespace() -> Self {
+        Namespace::Namespace("http://adobe.com/AS3/2006/builtin".to_string())
+    }
+
     pub fn package(package_name: &str) -> Self {
         Namespace::Package(package_name.to_string())
     }