Hunters who carry maximum food will not attempt to kill an animal when right clicked

[Feldfeld]

If a hunter (say, a cavalry unit) carries all its food and is tasked to an animal with a right click, it will not attempt to kill it and instead it will deposit its food.

However, there are situations when you don't want that. For example, you cannot attack a walrus in order to lure it. Also, you can't kill an animal for later as you are in a good position to attack it.

In fact, it is actually possible to attack/kill the animal, using the Ctrl modifier, however it will not be intuitive for the player, they generally won't know it is possible. So this could be a bit frustrating.

[Stan]

In 25664:

Do not go to the nearest dropsite when full and asked to hunt/slaughter and attack instead. This is fine as long as units don't decay.

Comments by: @wraitii, @Freagarach
Reported by: @FeldFeld
Fixes: #5954
Refs: ​Phab:rP24172
Differential Revision: ​https://code.wildfiregames.com/D3444