multishot on regular bows causes all arrows to go in one direction

[fayer3]

when enchanting a regular bow with multishot (not possible in vanilla, only possible with commands) all additional arrows are bundled with the main arrow

this is caused, because we override the yRot in Projectile#shootFromRotation here

VivecraftMod/common/src/main/java/org/vivecraft/mixin/world/entity/projectile/ProjectileMixin.java

Lines 64 to 71 in 88125b0

	@ModifyVariable(method = "shootFromRotation", at = @At("HEAD"), ordinal = 1, argsOnly = true)
	private float vivecraft$modifyYRot(float yRot, @Share("dir") LocalRef<Vec3> direction) {
	if (direction.get() != null) {
	return (float) Math.toDegrees(Math.atan2(-direction.get().x, direction.get().z));
	} else {
	return yRot;
	}
	}

vanilla adds the offset to the yRot before calling this method, which causes it to break
in BowItem#shootProjectile

projectile.shootFromRotation(shooter, shooter.getXRot(), shooter.getYRot() + angle, ...

so we would need to change the direction in another way for this to work.