If Infected drop back to 1 again, make the infected enraged again

Kinda hard to explain exactly through the title alone, so my apologizes if the title isn’t clear enough.

Right now if you’re the first infected, and infect someone else that then leaves the server (dropping the infected count back to 1), you don’t get to become enraged again because the game considers you have already infected someone before. This is probably a very rare scenario, but given that it happened, I thought I’d suggest it anyways.

If the infected count drops back to 1 after someone else has already been infected for some reason (such as player leaving or crashing) ensure that the infected player that became a solo-virus again gets have enraged mode again.