Channeling Tridents Only Affect A Single Mob

When throwing a channeling trident into a group of mobs, during thunder, the lighting it summons will only affect the mob that the trident actually hit. Instead of all surrounding mobs.

Normally this would affect all mobs around the one actually hit with the trident.

How to reproduce:
1. Make a 3x3 pen full of creepers, with sky access.
2. Set the weather to thunder and get a channeling trident
3. Throw the trident into the pen of creepers, and only the one hit will be turned into a charged creeper.
4. Summon lighting in the pen using `/summon lightning_bolt ~ ~ ~` and you will see the actual lighting converts all the creepers to charged creepers.