Stabilize iOS reconnect and screen audio sessions

src/VoiceCat.Core/VoiceCatClient.cs

@@ -264,6 +264,7 @@ public sealed partial class VoiceCatClient : IAsyncDisposable
         }
         // A liveness failure has already recorded the real cause and cancelled this read, so do
         // not replace it with the cancellation it produced.
+        catch (OperationCanceledException) when (cancellationToken.IsCancellationRequested) { }
         catch (Exception exception) { failure = exception; ConnectionFailure ??= exception; }
         finally
         {