Creative mode itemDropThreshold is not considered in all situations

The bug

Creative mode has an item drop threshold (NetHandlerPlayServer.itemDropThreshold), but the problem is that this is not considered for all cases.

Currently it is only used when the player throws item out of the creative inventory tabs or when the "Survival Inventory" is open. Other cases like throwing items from the hotbar, or items created when interacting with entities, containers are closed, etc. are not considered.

How to reproduce

1. Ensure you are in Creative mode

2. Put a few stacks of items in your hotbar

3. Hold "q" while hovering your mouse cursor over an item stack
   → ✔ Eventually, the item drop rate is throttled (you may need to drop multiple stacks before this happens)

4. Close your inventory

5. Hold "q" while an item stack is in your main hand
   → ❌ All items are thrown at a rapid rate; the threshold was not considered