Describe the feature

I am currently developing some components using custom-elements and I have run into a problem where all components that use teleports need to be put inside the custom-element for my styling to work properly. I have resorted to just passing the portal prop to all the components which works fine.

It would be nice to setup the ConfigProvider with a default portal so that all components can adapt automatically. What does everyone think?

Additional information

• I intend to submit a PR for this feature.
• I have already implemented and/or tested this feature.