Update client HP when leveling up

[ROTMGHacker]

The client HP bar is not updated when you level up. This leads to situations where your have 350/350 HP and 100/100 Client HP. Manually resetting the HP (using the hotkey) and nexusing also fixed this,

[Zaikay33]

You can set a hotkey to manually reset your client hp, but i could see this being helpful.