[web] clean up edited label
Summary:
Small cleanup diff which simplifies the logic around the editedLabel and always makes the structure of the web InlineEngagement component symmetrical to the native InlineEngagement component
Depends on D8678
Test Plan: flow and confirmed that there were no regresions with the web InlineEngagement
Reviewers: atul, kamil
Reviewed By: atul
Subscribers: ashoat, tomek
Differential Revision: https://phab.comm.dev/D8684