Handle ignored mappings locally in `Detach` configuration

osu.Game/Beatmaps/BeatmapSetInfo.cs

@@ -4,7 +4,6 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
-using AutoMapper;
 using osu.Framework.Testing;
 using osu.Game.Database;
 using osu.Game.Extensions;
@@ -76,10 +75,8 @@ public bool Equals(BeatmapSetInfo? other)
 
         public bool Equals(IBeatmapSetInfo? other) => other is BeatmapSetInfo b && Equals(b);
 
-        [IgnoreMap]
         IEnumerable<IBeatmapInfo> IBeatmapSetInfo.Beatmaps => Beatmaps;
 
-        [IgnoreMap]
         IEnumerable<INamedFileUsage> IHasNamedFiles.Files => Files;
     }
 }

osu.Game/Database/RealmObjectExtensions.cs

@@ -22,7 +22,9 @@ public static class RealmObjectExtensions
         private static readonly IMapper mapper = new MapperConfiguration(c =>
         {
             c.ShouldMapField = fi => false;
-            c.ShouldMapProperty = pi => true;
+            // If we want to limit this further, we can avoid mapping properties with no setter that are not IList<>.
+            // Takes a bit of effort to determine whether this is the case though, see https://stackoverflow.com/questions/951536/how-do-i-tell-whether-a-type-implements-ilist
+            c.ShouldMapProperty = pi => pi.GetMethod?.IsPublic == true;
 
             c.CreateMap<RealmKeyBinding, RealmKeyBinding>();
             c.CreateMap<BeatmapMetadata, BeatmapMetadata>();

osu.Game/Scoring/ScoreInfo.cs

@@ -4,7 +4,6 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
-using AutoMapper;
 using Newtonsoft.Json;
 using osu.Framework.Localisation;
 using osu.Framework.Testing;
@@ -113,16 +112,9 @@ public ScoreRank Rank
         [MapTo(nameof(Rank))]
         public int RankInt { get; set; }
 
-        [IgnoreMap]
         IRulesetInfo IScoreInfo.Ruleset => Ruleset;
-
-        [IgnoreMap]
         IBeatmapInfo IScoreInfo.Beatmap => Beatmap;
-
-        [IgnoreMap]
         IUser IScoreInfo.User => User;
-
-        [IgnoreMap]
         IEnumerable<INamedFileUsage> IHasNamedFiles.Files => Files;
 
         #region Properties required to make things work with existing usages