Fix blindfold round cleanup bug (#9821)

* Blindness public api

* fix blinding round cleanup bug

Content.Client/Eye/Blinding/BlindingSystem.cs

@@ -3,6 +3,14 @@ using Content.Shared.Eye.Blinding;
 using Robust.Client.GameObjects;
 using Robust.Client.Graphics;
 using Robust.Client.Player;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Content.Shared.Administration;
+using Content.Shared.Administration.Events;
+using Content.Shared.GameTicking;
+using Robust.Shared.GameObjects;
+using Robust.Shared.Network;
 
 namespace Content.Client.Eye.Blinding;
 
@@ -25,6 +33,8 @@ public sealed class BlindingSystem : EntitySystem
         SubscribeLocalEvent<BlindableComponent, PlayerAttachedEvent>(OnPlayerAttached);
         SubscribeLocalEvent<BlindableComponent, PlayerDetachedEvent>(OnPlayerDetached);
 
+        SubscribeNetworkEvent<RoundRestartCleanupEvent>(RoundRestartCleanup);
+
         _overlay = new();
     }
 
@@ -52,4 +62,9 @@ public sealed class BlindingSystem : EntitySystem
             _overlayMan.RemoveOverlay(_overlay);
         }
     }
+
+    private void RoundRestartCleanup(RoundRestartCleanupEvent ev)
+    {
+        _lightManager.Enabled = true;
+    }
 }