[Multi-domain]: Merge with 10.0

[mjhenkes]

What would you like?

As the 10.0 release becomes more stable we should merge mutli-domain with 10.0 as multi domain will be released as a 10.x release.

Why is this needed?

To release multi-domain we must be on the latest version of cypress.

Other

[cypress-bot]

The code for this is done in cypress-io/cypress#21237, but has yet to be released.
We'll update this issue and reference the changelog when it's released.

[cypress-bot]

Released in 10.0.0.

This comment thread has been locked. If you are still experiencing this issue after upgrading to
Cypress v10.0.0, please open a new issue.