PLT-6999 Stopped mutating style object provided by react-bootstrap (#6869)
PLT-6999 Stopped mutating style object provided by react-bootstrap (#6869)

* PLT-6999 Stopped mutating style object provided by react-bootstrap

* Fixed indentation to satisfy eslint

rickbatka/mattermost-webapp,rickbatka/mattermost-webapp,rickbatka/mattermost-webapp,rickbatka/mattermost-webapp