:racehorse: Make `pushToAncestorStacks` faster
:racehorse: Make `pushToAncestorStacks` faster

By allowing v8 to optimize pushing into the array.
atom/superstring,atom/superstring,atom/atom-patch,atom/atom-patch,atom/superstring,atom/atom-patch,atom/superstring,atom/atom-patch,nathansobo/atom-patch,atom/superstring