[web] Make spoiler components block link reveal / click until the spoiler is revealed

Summary:
We prevent links from being visible / clickable until the spoiler is clicked and revealed.

Depends on D5617

Test Plan:
Run yarn dev in keyserver and web with these new changes and confirm the links are not clickable until spoilers are revealed.

Reviewers: atul, ginsu

Reviewed By: atul

Subscribers: ashoat, tomek, abosh

Differential Revision: https://phab.comm.dev/D5623