[lib][web][native] Refactor updatesCurrentAsOfSelector

Summary: issue: https://linear.app/comm/issue/ENG-5003/refactor-updatescurrentasofselector

Test Plan: Tested that the seletor works by calling useSelector(updatesCurrentAsOfSelector('256')); and printing the result.

Reviewers: michal, kamil, ginsu

Reviewed By: kamil

Subscribers: ashoat, tomek, wyilio

Differential Revision: https://phab.comm.dev/D9685