Reduce ReIntroduceBackfillVulnerabilities migration threshold to ease queue
What does this MR do and why?
Changes the QUEUE_THRESHOLD from 50K to 40K for the ReIntroduceBackfillVulnerabilities migration. Currently the queue is constantly above 50K docs which is above our threshold.
References
https://gitlab.slack.com/archives/C05KP4J77EW/p1749710184732949
Related to #548327 (closed)
Edited by Madelein van Niekerk
