Summoning a lingering splash potion without any specific data in "Item" NBT render as a splash potion.

Step to reproduce :
1. Summon an lingering potion with no gravity :
summon minecraft:lingering_potion ~ ~ ~ {NoGravity:1b}

2. Note how the lingering potion renders as a splash potion.

Current result : The Lingering potion renders as a splash potion.
Expected result : The Lingering potion renders as a Lingering potion.