[web] [refactor] move ternary out of rendered css class

Summary: remove ternary from render and class name

Test Plan: make sure highlight still works.

Reviewers: atul, ashoat

Reviewed By: atul, ashoat

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

Differential Revision: https://phabricator.ashoat.com/D3072