They existed solely for typedoc and wrapping `useState()`. - Typedoc is managed by `useService()` and `services.d.ts`. - `useState()` is a minimal code in component, and is actually more useful as explicitly visible in component. closes odoo/odoo#133202 Related: odoo/enterprise#46327 Signed-off-by: Sébastien Theys (seb) <seb@odoo.com>