Better messaging about React 18 support

[lmiller1990]

What would you like?

Right now if you use cypress/react with React 18, React gives you a warning in your console. The next release of Cypress ships cypress/react18. We should detect if a user is on React 18, and if they import { mount } from 'cypress/react', we should print a warning telling them to update their import to from cypress/react to cypress/react18.

PR landing React 18 is here: #22876

Why is this needed?

So users know that we've got support for the version of React they are using.

Other

No response