Bad lives behavior with certain custom gametyperules

If GTR_FRIENDLY is enabled but GTR_CAMPAIGN is not enabled, players will be able to respawn with three lives when they lose their last life.

If GTR_FRIENDLY|GTR_CAMPAIGN|GTR_SPECTATORS is enabled, players will be able to respawn without their lives being replenished.

Bizarrely, neither of these bugs are present if GTR_FRIENDLY is not enabled.

Lastly: in gametypes where spectators are enabled, players who have received a game over can respawn with three lives by switching to spectator and back.