8061391: concat as a builtin optimistic form, had to remove NoTypedArrayData and replace it, as we throw away a lot of optimistic link opportunities with NoTypedArrayData not being Continuous
Reviewed-by: attila, hannesw

8025435: Optimistic builtins support, implemented initial optimistic versions of push, pop, and charCodeAt
Reviewed-by: attila, hannesw, sundar