MM_22682_Centralize_ID_Validation (#14237)

Co-authored-by: mattermod <mattermod@users.noreply.github.com>

model/group.go

@@ -142,7 +142,7 @@ func (group *Group) requiresRemoteId() bool {
 }
 
 func (group *Group) IsValidForUpdate() *AppError {
-	if len(group.Id) != 26 {
+	if !IsValidId(group.Id) {
 		return NewAppError("Group.IsValidForUpdate", "model.group.id.app_error", nil, "", http.StatusBadRequest)
 	}
 	if group.CreateAt == 0 {