Harden voice recording initialization (#698)

app/MindWork AI Studio/Program.cs

@@ -169,6 +169,7 @@ internal sealed class Program
         builder.Services.AddMudMarkdownClipboardService<MarkdownClipboardService>();
         builder.Services.AddSingleton<SettingsManager>();
         builder.Services.AddSingleton<ThreadSafeRandom>();
+        builder.Services.AddSingleton<VoiceRecordingAvailabilityService>();
         builder.Services.AddSingleton<DataSourceService>();
         builder.Services.AddScoped<PandocAvailabilityService>();
         builder.Services.AddTransient<HTMLParser>();