Dispose of GrainCancellationTokenSource

[hendrikdevloed]

Given that

public sealed class GrainCancellationTokenSource : IDisposable

Should https://github.com/OrleansContrib/Orleans.SyncWork/blob/47bbfe19d8b474db3c8c84182e73ed9f67662382/src/Orleans.SyncWork/SyncWorker.cs#L44

become

        using var cts = new GrainCancellationTokenSource();
        return await Start(request, cts.Token);

?

[Kritner]

I'm not totally sure if this needs to be done or not... would the source stay in scope for the full duration of the sync work progressing? would need to do some testing.