Ender dragons with a `DragonDeathTime` of 200 or greater never disappear

This behavior was introduced in 1.17-pre1.

The bug

If an ender dragon is summoned with the DragonDeathTime tag set to 200 or greater, it infinitely drops experience orbs and never disappears. The only way to remove this ender dragon from a world to prevent it from creating lag is to edit the world data.

Steps to reproduce

Run the following command:

summon ender_dragon ~ ~ ~ {DragonDeathTime: 200, Health: 0.0f}