FeedIterator.ReadNextAsync blocks in v3.38.0+

[tobywicks-cv]

Problem occurs in v3.43.0

Describe the bug
FeedIterator<>.ReadNextAsync() blocks indefinitely when existing in a .NET 4.8 web forms app (presumably running in AspNetSynchronizationContext). This issue does not occur when running in a console app.

To Reproduce

1. Configure a CosmosDB with a container.
2. Execute the following with updated end point details etc.

  var endpointUri = "*****";
  var primaryKey = "*****";
  var databaseId = "*****";
  var containerId = "*****";

  var cosmosClient = new CosmosClient(endpointUri, primaryKey);
  var container = cosmosClient.GetContainer(databaseId, containerId);

  var sqlQueryText = "SELECT * FROM c";
  var queryDefinition = new QueryDefinition(sqlQueryText);
  var queryResultSetIterator = container.GetItemQueryIterator<dynamic>(queryDefinition);
  
  while (queryResultSetIterator.HasMoreResults)
  {
      foreach (var item in await queryResultSetIterator.ReadNextAsync().ConfigureAwait(false))   // <- blocks here
      {
          Console.WriteLine(item);
      }
  }

Expected behavior
Call to queryResultSetIterator.ReadNextAsync does not block indefinitely and returns the data in the container.

Actual behavior
Call to queryResultSetIterator.ReadNextAsync blocks indefinitely.

Environment summary
SDK Version: Framework 4.8.1
OS Version: Windows 11

Additional context
Seems like this issue was introduced in v3.38.0. v3.37.1 does not block. So I'm using that version for the moment.

[kirankumarkolli]

@NaluTripician can you please take a look?