LibJS: Use the GetMethod AO for creating a TypedArray from an iterable

Author: https://github.com/IdanHo
Commit: https://github.com/SerenityOS/serenity/commit/3b81a7420ef
Pull-request: https://github.com/SerenityOS/serenity/pull/8446
Reviewed-by: https://github.com/linusg

Userland/Libraries/LibJS/Runtime/TypedArray.cpp

@@ -294,10 +294,10 @@ void TypedArrayBase::visit_edges(Visitor& visitor)
                 if (vm.exception())                                                                                                    \
                     return {};                                                                                                         \
             } else {                                                                                                                   \
-                auto iterator = first_argument.as_object().get(*vm.well_known_symbol_iterator());                                      \
+                auto iterator = first_argument.get_method(global_object(), *vm.well_known_symbol_iterator());                          \
                 if (vm.exception())                                                                                                    \
                     return {};                                                                                                         \
-                if (iterator.is_function()) {                                                                                          \
+                if (iterator) {                                                                                                        \
                     auto values = iterable_to_list(global_object(), first_argument, iterator);                                         \
                     if (vm.exception())                                                                                                \
                         return {};                                                                                                     \