I've created a pull request to detect CitrixBleed 2 into Burp's Bcheck repository: https://github.com/PortSwigger/BChecks/pull/253
The code is here if you want to give it a try:
https://github.com/felmoltor/BChecks/blob/main/vulnerabilities-CVEd/CVE-2025-5777%20-%20CitrixBleed%202.bcheck