[web] ens resolve usernames in the reaction tooltip

Summary:
The reaction tooltip was not properly resoving ens usernames. This diff fixes that issue

Linear task: https://linear.app/comm/issue/ENG-5917/reactions-list-doesnt-appear-to-be-ens-resolved

Test Plan:
Please see screenshots below

before:

after:

Reviewers: atul

Reviewed By: atul

Subscribers: ashoat, tomek, rohan

Differential Revision: https://phab.comm.dev/D10419