Everytime someone asks, it gets delayed. That's what I like to believe.
It is a free application made with the volunteers' own free time. You're not obligated (and probably not deserving) to know anything.
Wait patiently.
You can edit that constant using "Research" tab in Event Flag Editor.
EDIT: My PR got merged, so if you build PKHeX from source you can edit named work value (SWARM_SEED) as well. That change is not included in 22.01.01 release.