Summary:
Renaming table after converting Ref column to RefList didn't work. During table rename, all Refs columns
are converted briefly to Int columns which treats values stored in RefList columns as errors, and stores its
`repr` strings. This could be recovered back if the value stored in RefList column was a plain list, but if we had there
a RecordList object, the RefList column didn't know how to parse that.
Test Plan: Added test
Reviewers: georgegevoian
Reviewed By: georgegevoian
Differential Revision: https://phab.getgrist.com/D4233