Interesting approach. The court could probably care less about Israeli restrictions as it's a different country.
Officially US govt blacklisted Pegasus https://arstechnica.com/tech-policy/2021/11/us-blacklists-ma.... However, I wouldn't be surprised if some US spy agencies are still using it. If that's the case, Pegasus might try asking US intel agencies to block the case on the basis of disclose of classified info or harming national interests.
It would be interesting to see if all of the sudden "something happens" and the case is mysteriously dropped.