Form Select `createOptionForm` in v3 Multi Tenant

I followed the v3 documentation for Multi Tenant setup, and have a Resource form with a Select where I'm trying to "create a new option in a modal" (https://filamentphp.com/docs/3.x/forms/fields/select#creating-a-new-option-in-a-modal). The foreign key for the tenant id isn't getting populated when the modal Create action occurs and I'm wondering if there's something else I need to specify with the