Fix player rolling agent and operative at the same time (#23568)

Update NukeopsRuleSystem.cs

Probably fix the double pick bug by removing the picked agent from the Operative list

Content.Server/GameTicking/Rules/NukeopsRuleSystem.cs

@@ -713,6 +713,7 @@ public sealed class NukeopsRuleSystem : GameRuleSystem<NukeopsRuleComponent>
                     {
                         nukeOp = _random.PickAndTake(medPrefList);
                         everyone.Remove(nukeOp);
+                        prefList.Remove(nukeOp);
                         Logger.InfoS("preset", "Insufficient preferred nukeop commanders, picking an agent");
                     }