Many-to-many update check failing with connect

[f8k8]

Description and expected behavior
When trying to create and connect an object, in the same operation, which has the following policy:
@@allow('read,update', auth() != null && parents?[id == auth().id])

The create fails with a model not updatable error:
ORMError: many-to-many relation participant model "Child" not updatable

The read back should succeed though, as the parent would be connected as part of the operation:

const child = await authedClient.child.create({
    data: {
      name: "Child",
      parents: {
        connect: { id: userId },
      },
    },
  });

Environment:

• ZenStack version: 3.5.2
• Database type: Postgres / SQLite
• Node.js version: 24.11.1
• Package manager: npm

Additional context
There's a reproduction repo here: https://github.com/f8k8/ZenstackConnectPermissionIssue
Running npm install will install the dependencies and seed the database, then run npm run start to see the error.