Fix retry insert data issue

[ABrain7710]

Description

• Fix issue where we fail to retry inserting data in smaller chunks if an error occurs during insertion. This is why we have been getting errors like this when we see database errors like this one
• I also added a 3 second sleep just in case the error is temporary

    key = "_".join([str(x[unique]) for unique in uniques])
KeyError: 'pull_request_id'```

**Signed commits**
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