✅ ComboBox selected item can only be updated from binding property, not the control itself

public sealed record JavaVersionInformation
{
    public Version Version { get; init; }
    public string RawVersion { get; init; }
    public JavaType JavaType { get; set; } // This enum was left out
}

...

public sealed class TheViewModel : ObservableObject // From CommunityToolkit.Mvvm
{
    [ObservableProperty]
    public partial ObservableCollection<JavaVersionInformation> FoundJavaVersions { get; set; } = []; // Populated in the ctor

    [ObservableProperty]
    public partial JavaVersionInformation SelectedJavaVersion { get; set; } // Set after populating FoundJavaVersions. Shows on the ComboBox
}

<ComboBox
    Grid.Column="1"
    ItemsSource="{Binding ViewModel.FoundJavaVersions, Mode=OneTime}"
    SelectedItem="{Binding ViewModel.SelectedJavaVersion, Mode=TwoWay}">
    <ComboBox.ItemTemplate>
        <DataTemplate DataType="j:JavaVersionInformation">
            <ui:TextBlock>
                <Run Text="{Binding JavaType, Mode=OneTime}" />
                <Run Text="{Binding FixedRawVersion, Mode=OneTime}" />
                <Run Text="(" /><Run Text="{Binding RawVersion, Mode=OneTime}" /><Run Text=")" />
            </ui:TextBlock>
        </DataTemplate>
    </ComboBox.ItemTemplate>
</ComboBox>