* Use std::forward_list instead of base::LinkedList for better perf,
more consistent memory management. Better than std::list because we
don't need the double-linked-list behavior of std::list
* Use std::unordered_map instead of std::map for the v8 hash table
base::LinkedList does not delete its members on destruction. We need to
manually ensure the linkedlist is empty when the ObjectCache is
destroyed.
Fixes#27039
Notes: Fixed memory leak when sending non-primitives over the context
bridge
