Dynamic/scoped `<Toaster />` configuration support

Hi, thanks for the amazing library ❤️

I wanted to ask if there is currently a way to dynamically change <Toaster /> settings for a specific page, component, dialog, or temporary UI state only.

Example use cases:

• a dialog opens and all toasts should temporarily use position="bottom-center"
• a specific page wants different richColors, theme, or expand
• a component wants custom toaster behavior without affecting the global app toaster