InList: add more integration test for Inlist

[liukun4515]

Thank you @liukun4515 -- I reviewed the tests carefully and I think this looks good.

The code "feels" a little more complicated than needed but I think it is doing what it needs to and the test coverage is good.

I wonder if it is worth just 1 test in sql_integration somewhere that ensures this implementation is hooked up correctly rather than just relying on tests in in_list.rs

I think it would be good if @Ted-Jiang was also able to review this PR prior to merging it, but it isn't necessary.

Originally posted by @alamb in #2809 (review)