Fix IMod now using reference equality as well

osu.Game/Online/API/APIMod.cs

@@ -52,7 +52,8 @@ namespace osu.Game.Online.API
             return resultMod;
         }
 
-        public bool Equals(APIMod other) => Acronym == other?.Acronym;
+        public bool Equals(IMod other) => other is APIMod them && Equals(them);
+        public bool Equals(APIMod other) => ((IMod)this).Equals(other);
 
         public override string ToString()
         {

osu.Game/Rulesets/Mods/IMod.cs

@@ -1,11 +1,12 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System;
 using Newtonsoft.Json;
 
 namespace osu.Game.Rulesets.Mods
 {
-    public interface IMod
+    public interface IMod : IEquatable<IMod>
     {
         /// <summary>
         /// The shortened name of this mod.

osu.Game/Rulesets/Mods/Mod.cs

@@ -149,6 +149,7 @@ namespace osu.Game.Rulesets.Mods
             return copy;
         }
 
-        public bool Equals(Mod other) => GetType() == other?.GetType();
+        public bool Equals(IMod other) => other is Mod them && Equals(them);
+        public bool Equals(Mod other) => Acronym == other?.Acronym;
     }
 }

osu.Game/Scoring/ScoreInfo.cs

@@ -256,7 +256,8 @@ namespace osu.Game.Scoring
         {
             public string Acronym { get; set; }
 
-            public bool Equals(DeserializedMod other) => Acronym == other?.Acronym;
+            bool IEquatable<IMod>.Equals(IMod other) => other is DeserializedMod them && Equals(them);
+            public bool Equals(DeserializedMod other) => ((IMod)this).Equals(other);
         }
 
         public override string ToString() => $"{User} playing {Beatmap}";