Re-Enable Arrivals (DeltaV-Station#871)

# Description

Apparently people thought we had removed the Arrivals Terminal from the
game. This corrects it so that the default behavior is Arrivals to be
enabled.

# Changelog

:cl:
- fix: Arrivals has been re-enabled. I feel sorry for all the people who
thought we had disabled it. This was a legacy toggle that was leftover
from when we forked DeltaV

Content.Shared/CCVar/CCVars.cs

@@ -1591,7 +1591,7 @@ public static readonly CVarDef<int>
         /// Whether the arrivals shuttle is enabled.
         /// </summary>
         public static readonly CVarDef<bool> ArrivalsShuttles =
-            CVarDef.Create("shuttle.arrivals", false, CVar.SERVERONLY);
+            CVarDef.Create("shuttle.arrivals", true, CVar.SERVERONLY);
 
         /// <summary>
         /// The map to use for the arrivals station.