✨ Primitive for handling Enter / Exit animations

[maiieul]

Open animations do work but not close animations.

You can try with

    <Modal.Root>
      <Modal.Trigger class="ui-open:bg-red-500">Open Modal</Modal.Trigger>
      <Modal.Content class="ui-open:backdrop:animate-from-invisible not-ui-open:backdrop:animate-from-visible">
        Some content
      </Modal.Content>
    </Modal.Root>

on docs/src/routes/components/modal/examples/basic.tsx