fix persisting of many to many entity

app/src/ui/routes/data/data.$entity.$id.tsx

@@ -262,18 +262,18 @@ function EntityDetailInner({
       navigate(routes.data.entity.edit(other.entity.name, row.id));
    }
 
-   function handleClickNew() {
-      try {
+   let handleClickNew: any;
+   try {
+      if (other.entity.type !== "system") {
          const ref = relation.getReferenceQuery(other.entity, id, other.reference);
-
-         navigate(routes.data.entity.create(other.entity.name), {
-            query: ref.where
-         });
-         //navigate(routes.data.entity.create(other.entity.name) + `?${query}`);
-      } catch (e) {
-         console.error("handleClickNew", e);
+         handleClickNew = () => {
+            navigate(routes.data.entity.create(other.entity.name), {
+               query: ref.where
+            });
+            //navigate(routes.data.entity.create(other.entity.name) + `?${query}`);
+         };
       }
-   }
+   } catch (e) {}
 
    if (!$q.data) {
       return null;

app/src/ui/routes/data/data.$entity.create.tsx

@@ -18,7 +18,7 @@ export function DataEntityCreate({ params }) {
    const entity = $data.entity(params.entity as string);
    if (!entity) {
       return <Message.NotFound description={`Entity "${params.entity}" doesn't exist.`} />;
-   } else if (entity.type !== "regular") {
+   } else if (entity.type === "system") {
       return <Message.NotAllowed description={`Entity "${params.entity}" cannot be created.`} />;
    }
 

app/src/ui/routes/data/data.$entity.index.tsx

@@ -155,7 +155,7 @@ function EntityCreateButton({ entity }: { entity: Entity }) {
 
    const [navigate] = useNavigate();
    if (!entity) return null;
-   if (entity.type !== "regular") {
+   if (entity.type === "system") {
       const system = {
          users: b.app.config.auth.entity_name,
          media: b.app.config.media.entity_name