investigate ways to reduce bundle size

[gvwilson]

The dash bundle is approx. 1o Mbyte, which will be a problem for WASM deploys. We should investigate ways to reduce its size.

cf. plotly/plotly.py#4817

[ndrezn]

Dash has several required dependencies:

Flask>=1.0.4,<3.1
Werkzeug<3.1
plotly>=5.0.0
dash_html_components==2.0.0
dash_core_components==2.0.0
dash_table==5.0.0
importlib-metadata
typing_extensions>=4.1.1
requests
retrying
nest-asyncio
setuptools

Simplifying this dependency list would be nice, and several dependencies are stubs.

Another strategy would be to asynchronously load bundles for dash_html_components, dash_core_components, and dash_table only when they are imported rather than requiring they be downloaded at all times. While dcc and html are more commonly used, making dash_table a lazy import would have a noticeable impact on performance in most cases.