🐛(frontend) fix list copy paste

When we copy paste a list, the pasted
list is not formatted correctly.
By pinning prosemirror-model to 1.25.0,
we avoid this issue.
We added "prosemirror-model" to the
ignored dependencies of Renovate to
avoid to have a bump until the patch
on the Blocknote.js side.

src/frontend/package.json

@@ -34,6 +34,7 @@
     "@typescript-eslint/eslint-plugin": "8.32.0",
     "@typescript-eslint/parser": "8.32.0",
     "eslint": "8.57.0",
+    "prosemirror-model": "1.25.0",
     "react": "19.1.0",
     "react-dom": "19.1.0",
     "typescript": "5.8.3",