Passing client-side properties into Supabase hooks
Mextur is developing a multi-tenant app on Supabase and needs to pass tenant-specific context into the `custom_access_token` and `send_email` hooks. They are currently using user metadata to pass the `tenant_id`, but this approach is problematic due to metadata being mutable and shared across sessions. Mextur seeks advice on a more reliable method to pass client context into these hooks, especially for email branding in the `send_email` hook.