Lack of fireworks in Creative mode.

Summary: I can't seem to find fireworks via the Search tab in Creative Inventory. I can see the ingredients, but not the rocket itself.

Expected: I should see a new tab with all of the different firecrackers placed in, just like how the potions were placed in the Potions tab in the Creative Inventory.

Steps to Reproduce:

1. Start a creative world.
2. Open inventory.
3. Try to find a firework item.