Calling DeleteRecordsAsync on AdminClient with empty list of TopicPartitionOffsets will hang forever.

[DanielGlos]

Description

As stated in title calling DeleteRecordsAsync with empty list will hang forever. Expected behavior would be to either throw an exception or just return from the method.

How to reproduce

using Confluent.Kafka;

using var adminClient = new AdminClientBuilder(new AdminClientConfig { BootstrapServers = "localhost:9092" }).Build();
Console.WriteLine("Calling delete records");
await adminClient.DeleteRecordsAsync(new List());
Console.WriteLine("Deleted records"); // THIS LINE WILL NEVER BE REACHED
Console.ReadLine();

Checklist

Please provide the following information:

• A complete (i.e. we can run it), minimal program demonstrating the problem. No need to supply a project file.
• Confluent.Kafka nuget version. : 2.3.0
• Apache Kafka version. : 3.2-IV0
• Operating system. : Windows 11
• Critical issue.