spec_replay_round_delay

Round can be delayed by this much due to someone watching a replay; must be at least 3-4 seconds, otherwise the last replay will always be interrupted by round start, assuming normal pause between round_end and round_start events (7 seconds) and freezecam delay (2 seconds) and 7.4 second full replay (5.4 second pre-death and ~2 seconds post-death) and replay in/out switching (up to a second)