[Tables] the continuation token on tables is not working when no row key in continuation

### Which service(blob, file, queue, table) does this issue concern?
table
### Which version of the Azurite was used?
latest
### Where do you get Azurite? (npm, DockerHub, NuGet, Visual Studio Code Extension)
github
### What's the Node.js version?
v17.6.0
### What problem was encountered?
When loading entities with continuation token the same result and continuation token is return than the first load if no rowkey continuation token
### Steps to reproduce the issue?

* Insert 21 partitionkey in table
* retrieve the 20 first with a page size of 20 then use the continuation token.
* You are still retrieving the 20 first.
### Have you found a mitigation/solution?
Yes pull request is coming