1.19.2 forge
Mod version: 1.19.2-forge-1.0

Because your code uses the /summon command or something similar, i cannot control the health or other factors of the ender dragon fight with the Mod InControl because it doesn't allow for tweaking of mobs spawned with the /summon command or from a spawn egg. Live the structure but cant put it in my modpack because it breaks other mods.

the ender dragon still gets spawned in the same way as in vanilla

here

https://github.com/yungnickyoung/YUNGs-Better-End-Island/blob/f9e50c8306c9f1b9d3f3966c21914fda1fb7780f/Common/src/main/java/com/yungnickyoung/minecraft/betterendisland/mixin/EndDragonFightMixin.java#L618

and here

https://github.com/yungnickyoung/YUNGs-Better-End-Island/blob/f9e50c8306c9f1b9d3f3966c21914fda1fb7780f/Common/src/main/java/com/yungnickyoung/minecraft/betterendisland/mixin/EndDragonFightMixin.java#L136

this is not a datapack, it doesn't use commands

regardless, Incontrol does not work to controll the ender dragon while this mod is installed. couldn't tell you why.