✅ Serializing/Deserializing a Dictionary with a struct key not working

public sealed class BCCCodebase
{
    public Collection<FeatureBase> Features { get; } = [];
    public Dictionary<BCCNamespace, BCCCodebase> Namespaces { get; } = [];
}

public readonly struct BCCNamespace(
    bool isStrict,
    string? name)
    : IEquatable<BCCNamespace>
{
    public bool IsStrict { get; } = isStrict;
    public string? Name { get; } = name;

    // Equality methods follow
}

// This class is additionally inherited with various features.
public abstract class BCCFeatureBase(
    bool isPrivate)
    : FeatureBase
{
    public bool IsPrivate { get; } = isPrivate;
}
public abstract class FeatureBase
{
    public JavadocComment? Comment { get; internal set; }
}

internal sealed class BCCParserTests
{
    private JsonSerializerOptions _jsonSerializerOptions;

    [OneTimeSetUp]
    public void SetUp()
    {
        this._jsonSerializerOptions = new();
        this._jsonSerializerOptions.Converters.Add(new BCCNamespaceJsonConverter());
    }

    [Test]
    [TestCase("Parsing_File_Returns_Features_Input1")]
    public async Task Parsing_File_Returns_Features(string fileName)
    {
        var parser = ActivatorUtilities.CreateInstance<BCCParser>(this._serviceProvider);
        await parser.ParseFileAsync($"TestFiles/BCC/{fileName}.acs");
        var featuresJson = JsonSerializer.Serialize(parser.BaseCodebase, this._jsonSerializerOptions);
        _ = await VerifyJson(featuresJson, this._verifySettings);
    }
}