Fix regression introduced by #1543
Fix regression introduced by #1543

The Page component's config method wasn't being called, therefore the
bodyClass would not be applied.

flarum/core,malayladu/core,malayladu/core,datitisev/core,flarum/core,datitisev/core,malayladu/core,datitisev/core,datitisev/core,malayladu/core,flarum/core