viktorshevchenko210

I changed code a little bit. Also, we need to check PrefetchCount because MaxNumberOfMessages is 10.  https://docs.aws.amazon.com/AWSSimpleQueueService/latest/APIReference/API_ReceiveMessage.html

@danielgerlag could you please review this PR? There is something strange with tests. One integration test failed in github-actions, but they are all passed in AppVeyor.

@danielgerlag But TransactionScope doesn't work for DynamoDB, CosmosDB...

@danielgerlag I changed the name of method. Failed integration test is not related to changes in this PR. It was fixed in https://github.com/danielgerlag/workflow-core/pull/1039