Fireworks Should Scare Mobs

Firework explosions should scare away mobs for a few seconds. Like punching a passive mob makes it run around, a nearby firework explosion should startle low-level hostile and passive mobs. This might make them a bit useful for sticky PVE situations when you're totally surrounded. They might even be something to bring with you when caving, in case you need to get out of a crowded dungeon in a pinch. Of course it should be limited. The wither ain't scared of no booms.