Blazor_DisposeAsync_Sample

Test project to reproduce the following:
.NET 6 (dotnet/aspnetcore#32901) breaks the JS invocation from the IAsyncDisposable.DisposeAsync() method.

Summary

.NET 5: Run the https://github.com/pos777/Blazor_DisposeAsync_Sample/blob/master/NET5/NET5.sln project; Refresh a browser page; Wait for a while; There is no an error in log.

.NET 6: Run the https://github.com/pos777/Blazor_DisposeAsync_Sample/blob/master/NET6/NET6.sln project; Refresh a browser page; The unhandled JSDisconnectedException exception is logged.