[web] Use hook instead of connect function and HOC in UserSettingsModal

Test Plan: Tested settings modal pop

Reviewers: palys-swm, ashoat

Reviewed By: ashoat

Subscribers: ashoat, KatPo, zrebcu411, Adrian, atul, karol-bisztyga

Differential Revision: https://phabricator.ashoat.com/D775