ci: split facet cypress tests in half (#4237)

https://coveord.atlassian.net/browse/KIT-3445

gotta go fast. Slowest action went from 18 to 11 min. Closer to the
second slowest at 8 mins.


![3aa5921d82d2ac608b8c575ec87ee2ac](https://github.com/user-attachments/assets/ee8efc45-4c1f-4198-9c38-2a53b950673e)