feat(modal-property): additional exit functionality (#169)

fix(accessibility): aria-label the close button for screenreaders
docs: adds an example and escapable info section to documentation

docs/components/modal/examples/ModalEscapableExample.vue

@@ -0,0 +1,13 @@
+<template>
+  <div class="vp-raw flex justify-start space-x-2">
+    <span>
+      <ModalExample trigger-text="Escapable" />
+    </span>
+    <span>
+      <ModalExample :escapable="false" trigger-text="Not Escapable" />
+    </span>
+  </div>
+</template>
+<script setup>
+import ModalExample from './ModalExample.vue'
+</script>