Export default module in plotly-renderer.js

Hi There!

We are using jupyter-plotly to support plotly plots in mystmd's web themes to enable people publishing jupyter notebooks with plotly outputs to have their plots displayed and active in their websites.

To achieve this we currently have to patch plotly-renderer.js to add a default export. See: https://github.com/jupyter-book/myst-theme/blob/3a1b70b6f2a6b827effb60891f0e693c9bf65e05/patches/jupyterlab-plotly%2B5.18.0.patch

We'd love to avoid the patch but appreciate the patch we are doing might be good for our case but break other things. If you have advice on how to change our usage, which is pretty simple (see: https://github.com/jupyter-book/myst-theme/blob/3a1b70b6f2a6b827effb60891f0e693c9bf65e05/packages/jupyter/src/plotly.ts#L40) without the need for any changes orthe patch, we'd love to go that way too.

Thanks!