[web] [fix] icon regression thread item

Summary: move icon back to where it once was

Test Plan: should look like screen shot and where it was once before

Reviewers: atul, ashoat

Reviewed By: atul, ashoat

Subscribers: ashoat, palys-swm, Adrian, karol-bisztyga

Differential Revision: https://phabricator.ashoat.com/D3135