[web] Use hook instead of connect functions and HOC in ThreadSettingsModal

Summary: Switched to hooks instead of the connect function in the ThreadSettingsModal class.

Test Plan: Checked if on web you could still edit a threads name and description.

Reviewers: ashoat, palys-swm

Reviewed By: ashoat

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

Differential Revision: https://phabricator.ashoat.com/D751