Interface: Allow first aid to show pet hp in targeting dropdown

[Mousus6]

The addition of the player hp to the targeting dropdown is awesome and if it isn't too much code overhead it would be nice to have pet hp shown in their targeting dropdowns as well to make sniping low hp pets easier and judging whether to call off a miniboss attempt on mobile more possible.

[Klapaucius]

Trying to see hp on mobile is a bad experience, this seems like a good idea to me.