feat(js): support new checkout totals shape#8727

mauricioabreu wants to merge 2 commits into

feat/per-seat-costsclerk/javascript:feat/per-seat-costsfrom

mauricio-antunes/bill-1791-aio-update-to-use-new-totals-shapeclerk/javascript:mauricio-antunes/bill-1791-aio-update-to-use-new-totals-shapeCopy head branch name to clipboard