Try to reenable tests from downstream ipywidgets (#1350)

Author: Carreau

.github/workflows/downstream.yml

@@ -38,7 +38,7 @@ jobs:
         uses: jupyterlab/maintainer-tools/.github/actions/downstream-test@v1
         with:
           package_name: ipywidgets
-          test_command: pytest -vv -raXxs -k \"not deprecation_fa_icons and not tooltip_deprecation and not on_submit_deprecation\" -W default --durations 10 --color=yes
+          test_command: pytest -vv -raXxs -W default --durations 10 --color=yes
 
   jupyter_client:
     runs-on: ubuntu-latest