Check if a task's mission is unlocked before activating a comm event.

gamebrain/gamedata/cache.py

@@ -2518,13 +2518,21 @@ def _find_comm_event_to_activate(
         cls, team_id: TeamID, team_data: InternalTeamGameData
     ):
         def is_relevant_task(global_task: InternalGlobalTaskData) -> bool:
+            # Check if the associated mission is even unlocked.
+            team_mission = team_data.missions.get(global_task.missionID)
+            if not team_mission:
+                return False
+            if not team_mission.unlocked:
+                return False
+
             team_task = team_data.tasks.get(global_task.taskID)
             if not team_task:
                 return False
             if not team_task.visible:
                 return False
             if team_task.complete:
                 return False
+
             completion_criteria = global_task.markCompleteWhen
             if not completion_criteria:
                 return False