False positives when using horse speed attributes

[blixy77]

I'm plugins works great for blocking unauthorized flight and extreme movement exploits, but I noticed an issue with horse speed checks.

Currently, AntiFly correctly detects cheats like entity speed on horses. However, if I give the horse a legitimate speed attribute (e.g., via /attribute or a plugin), AntiFly triggers the speed check and flags it as a cheat, even though no hacks are involved.

Expected behavior:
AntiFly should consider vanilla and plugin-added horse speed attributes and not trigger false positives when movement is legitimate.

Actual behavior:
Any increase in horse speed via attributes causes dismounting player, even without cheats.

Environment:
Paper 1.21.11
AntiFly latest version

[blixy77]

Sometimes it even happen without any attributes on horse