feat: adjust live compose to correctly split items

Author: denisebroekman

package.json

@@ -21,7 +21,7 @@
     "@iconify-json/lucide": "^1.2.98",
     "@lit/context": "^1.1.6",
     "@qti-components/theme": "^1.3.2",
-    "@qti-editor/core": "^1.0.0",
+    "@qti-editor/core": "^1.3.0",
     "@qti-editor/interaction-associate": "^1.2.1",
     "@qti-editor/interaction-choice": "^1.2.1",
     "@qti-editor/interaction-extended-text": "^1.2.1",