Merge pull request #5694 from plotly/fix-jupyter-deps-issue

[CHORE]: Fix jupyter deps issue

Author: emilykl

.github/workflows/check-js-build.yml

@@ -49,7 +49,9 @@ jobs:
       run: |
         uv venv
         source .venv/bin/activate
-        uv pip install jupyterlab
+        # Technically, we only need the `jupyter-builder` package, but using the dev_build extra
+        # keeps build behavior consistent across all CI jobs
+        uv sync --extra dev_build
         cd js
         npm ci
         npm run build

CONTRIBUTING.md

@@ -251,7 +251,7 @@ Two kinds of Jupyter support are included:
     which allows us to avoid embedding `plotly.js` in the notebook output.
     The JupyterLab extension source code is located at `js/src/mimeExtension.ts`
     and the compiled extension code is located at `plotly/labextension` in the built Python package.
-    The command `jupyter labextension build` (which is one of the steps called by `npm run build`) compiles the extension
+    The command `jupyter-builder build` (which is one of the steps called by `npm run build`) compiles the extension
     and places the build artifacts in `plotly/labextension`. 
 
 2.  **FigureWidget**: