[web] fix width of user profile action button

Summary: Just noticed that there was a minor regression with the user profile action buttons width. This diff address that regression

Test Plan:
Please see screenshots below

before:

after:

confirmed that all the buttons for every relationship condition still looks/behaves the same

Reviewers: atul, inka

Reviewed By: atul

Subscribers: ashoat, tomek, wyilio

Differential Revision: https://phab.comm.dev/D9516