Combine csv example into examples.ipynb and update test accordingly

[clmould]

Description

Checklist

I confirm that I have completed the following checks:

• My changes follow the PROCESS style guide
• I have justified any large differences in the regression tests caused by this pull request in the comments.
• I have added new tests where appropriate for the changes I have made.
• If I have had to change any existing unit or integration tests, I have justified this change in the pull request comments.
• If I have made documentation changes, I have checked they render correctly.
• I have added documentation for my change, if appropriate.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 45.99%. Comparing base (a188483) to head (cd8ef68).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #4022   +/-   ##
=======================================
  Coverage   45.99%   45.99%           
=======================================
  Files         123      123           
  Lines       29002    29002           
=======================================
  Hits        13340    13340           
  Misses      15662    15662           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.