Tell us about your request

Add docs for how to use vaadin/flow#19948 and what it does.

Add the following limitations:

• Flow apps will not compile with the setting on. Likely with some random "import not found" error.
• Copilot will not work
• If Hilla or some other part adds a package that depends on our components, the feature will stop working and all web components will be imported again. Flow manually excludes @vaadin/hilla-react-crud.

The feature description (javadoc) could have some kind of warning. It would also be good to mention that the feature excludes Vaadin components. Currently it says "Whether to include web component npm packages" which sound quite much broader than what it does.

If you think this issue is important, add a 👍 reaction to help the community and maintainers prioritize this issue.