[MM-49989] Pass a context.Context to Client4 methods (#22922)

* Migrate all method in model/client4.go to accept a context.Context

* Fix th.*Client

* Fix remaining issues

* Empty commit to triger CI

* Fix test

* Add cancellation test

* Test that returned error is context.Canceled

* Fix bad merge

* Update mmctl code

---------

Co-authored-by: Mattermost Build <build@mattermost.com>

server/channels/app/slashcommands/auto_teams.go

@@ -4,6 +4,8 @@
 package slashcommands
 
 import (
+	"context"
+
 	"github.com/mattermost/mattermost-server/server/public/model"
 	"github.com/mattermost/mattermost-server/server/v8/channels/utils"
 )
@@ -57,7 +59,7 @@ func (cfg *AutoTeamCreator) createRandomTeam() (*model.Team, error) {
 		Type:        model.TeamOpen,
 	}
 
-	createdTeam, _, err := cfg.client.CreateTeam(team)
+	createdTeam, _, err := cfg.client.CreateTeam(context.Background(), team)
 	if err != nil {
 		return nil, err
 	}