MM_22682_Centralize_ID_Validation (#14237)

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

model/cluster_discovery.go

@@ -89,7 +89,7 @@ func FilterClusterDiscovery(vs []*ClusterDiscovery, f func(*ClusterDiscovery) bo
 }
 
 func (o *ClusterDiscovery) IsValid() *AppError {
-	if len(o.Id) != 26 {
+	if !IsValidId(o.Id) {
 		return NewAppError("ClusterDiscovery.IsValid", "model.cluster.is_valid.id.app_error", nil, "", http.StatusBadRequest)
 	}