ci: we did not test against vue 3.x

Fixes #920

.github/workflows/test.yaml

@@ -510,6 +510,7 @@ jobs:
           pip install `echo packages/solara-enterprise/dist/*.whl`[ssg,auth]
           pip install "jupyterlab<4" "playwright==1.41.2" "pydantic<2" "ipywidgets~=${{ matrix.ipywidgets }}"
           pip install jupyter_core jupyter-packaging
+          pip install ipyvue ipyvuetify --pre  # use vue3 and vuetify3
           pip install --pre ipyvue ipyvuetify
           pip freeze --exclude solara --exclude solara-ui --exclude solara-server --exclude pytest-ipywidgets --exclude solara-enterprise > ${{ env.LOCK_FILE_LOCATION }}
           git diff | tee ${{ env.DIFF_FILE_LOCATION }}