Clear and concise description of the problem

When using the useToast composable, there is a bit of a naming conflict between the entity managing the toasts and the actual toast. So when I'm writing const toast = useToast(), it looks like a toast but it is actually the toast controller. Also, the naming is inconsistent with useModalController.

Suggested solution

I think useToastController is more consistent because useToast doesn't actually return a toast but a controller that manages the toasts, similar to useModalController.

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