BREAKING CHANGE: Remove support for CDP within Firefox

### What would you like?

Remove CDP support within Firefox

### Why is this needed?

CDP will be removed with Firefox 141 [see blogpost](https://www.cypress.io/blog/announcing-cypress-support-for-firefox-over-webdriver-bidi). Following Cypress last 3 major versions supported and relasing Cypress 15, it makes sense to remove CDP support within Firefox

### Other

_No response_