Use Dictionary instead of ImmutableDictionary

StabilityMatrix.Avalonia/Helpers/ViewModelSerializer.cs

@@ -1,6 +1,5 @@
 using System;
 using System.Collections.Generic;
-using System.Collections.Immutable;
 using System.Linq;
 using System.Reflection;
 using System.Text.Json.Serialization;
@@ -9,16 +8,12 @@ namespace StabilityMatrix.Avalonia.Helpers;
 
 public static class ViewModelSerializer
 {
-    public static IImmutableDictionary<string, Type> GetDerivedTypes(Type baseType)
+    public static Dictionary<string, Type> GetDerivedTypes(Type baseType)
     {
-        return GetJsonDerivedTypeAttributes(baseType)
-            .ToImmutableDictionary(x => x.typeDiscriminator, x => x.subType);
+        return GetJsonDerivedTypeAttributes(baseType).ToDictionary(x => x.typeDiscriminator, x => x.subType);
     }
 
-    public static IEnumerable<(
-        Type subType,
-        string typeDiscriminator
-    )> GetJsonDerivedTypeAttributes(Type type)
+    public static IEnumerable<(Type subType, string typeDiscriminator)> GetJsonDerivedTypeAttributes(Type type)
     {
         return type.GetCustomAttributes<JsonDerivedTypeAttribute>()
             .Select(x => (x.DerivedType, x.TypeDiscriminator as string ?? x.DerivedType.Name));