PLT-7220: Jumping to a GM from a flagged messages doesn't add the GM to your LHS (#7319)
PLT-7220: Jumping to a GM from a flagged messages doesn't add the GM to your LHS (#7319)

* Ensured that DM/GM channel is added to LHS when jump link is clicked in RHS

* Moved sidebar channel loading logic into global_actions so that it happens after the users' channels have been loaded

* Fixing checkstyle issues

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