docs(modal): note about invokers in the future

Author: thejackshelton

apps/website/src/routes/docs/headless/(components)/modal/index.mdx

@@ -103,7 +103,9 @@ To open or close the modal, we can use `bind:show`, a custom signal bind that le
 
 The example above opens the modal when the **Open Modal** button is clicked and closes it when a button inside the modal is clicked.
 
-> Custom signal binds are like a remote control for components, controlling states like opening or closing a modal.
+> In the future, we may not need to manage state for the opening and closing of dialogs and other UI elements. Here's Open UI's [invoker proposal](https://open-ui.org/components/invokers.explainer/).
+
+Custom signal binds are like a remote control for components, controlling states like opening or closing a modal.
 
 ## The Top Layer