Fix - Query - Chunked - Resolved infinite loop when start chunk > 1

[NeekTheNook]

Resolved an issue when the start chunks value was > 1 an infinite loop would be created as handled messages would always be less than available messages.

Added more safety around input arguments, forcing minimums of 1 for both $chunk_size and $start_chunk.

[NeekTheNook]

Naturally the additional safety (minimums for arguments) might be a breaking change for some use cases, so that part is at the maintainers discretion. Absolutely happy to refactor if that is a problem :)

[Webklex]

Hi @NeekTheNook , many thanks for your suggested improvements and your pull request!

Best regards & happy coding,