[web] Render a list of add user items

Summary:
Render the sorted list with filtered users.

This is one of the diffs that update how the component is rendered. The final result looks like this:

Depends on D4306

Test Plan: Check if all the users are rendered.

Reviewers: def-au1t, atul

Reviewed By: atul

Subscribers: ashoat, Adrian, yayabosh

Differential Revision: https://phab.comm.dev/D4307