fix: system local errcheck issues (#28539)

Co-authored-by: Ben Schumacher <ben.schumacher@mattermost.com>

server/.golangci.yml

@@ -105,7 +105,6 @@ issues:
         channels/api4/status.go|\
         channels/api4/status_test.go|\
         channels/api4/system.go|\
-        channels/api4/system_local.go|\
         channels/api4/system_test.go|\
         channels/api4/team.go|\
         channels/api4/team_local.go|\