sqlite - chore: testing iterator with useKeyPrefix and documentation

[jaredwray]

Please check if the PR fulfills these requirements

• Followed the Contributing guidelines.
• Tests for the changes have been added (for bug fixes/features) with 100% code coverage.
• Docs have been added / updated (for bug fixes / features)

What kind of change does this PR introduce? (Bug fix, feature, docs update, ...)
sqlite - chore: testing iterator with useKeyPrefix and documentation

#1431

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (3605ff8) to head (7259c89).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##              main     #1466   +/-   ##
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  Coverage   100.00%   100.00%           
=========================================
  Files           31        30    -1     
  Lines         2717      2716    -1     
  Branches       779       832   +53     
=========================================
- Hits          2717      2716    -1     

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