MM-12976: Moving MFA to Team edition (#9971)

* MM-12976: Moving MFA to Team edition

* Changing the mfa disabled i18n key and string

app/authentication.go

@@ -8,6 +8,7 @@ import (
 	"strings"
 
 	"github.com/mattermost/mattermost-server/model"
+	"github.com/mattermost/mattermost-server/services/mfa"
 	"github.com/mattermost/mattermost-server/utils"
 )
 
@@ -145,15 +146,12 @@ func (a *App) CheckUserPostflightAuthenticationCriteria(user *model.User) *model
 }
 
 func (a *App) CheckUserMfa(user *model.User, token string) *model.AppError {
-	if license := a.License(); !user.MfaActive || license == nil || !*license.Features.MFA || !*a.Config().ServiceSettings.EnableMultifactorAuthentication {
+	if !user.MfaActive || !*a.Config().ServiceSettings.EnableMultifactorAuthentication {
 		return nil
 	}
 
-	if a.Mfa == nil {
-		return model.NewAppError("checkUserMfa", "api.user.check_user_mfa.not_available.app_error", nil, "", http.StatusNotImplemented)
-	}
-
-	ok, err := a.Mfa.ValidateToken(user.MfaSecret, token)
+	mfaService := mfa.New(a, a.Srv.Store)
+	ok, err := mfaService.ValidateToken(user.MfaSecret, token)
 	if err != nil {
 		return err
 	}