Enhancement Request: Completing Pagination Implementation for Google Analytics 4 Data API

Hi there @jradcliff @philipwalton

The run_report_with_pagination.py file in the google-analytics-data documentation provides valuable insights into pagination for handling large data. However, there's a need for clarity on when to update the offset in subsequent API requests.

The documentation doesn't specify the conditions for which an offset should update.
Clear guidance on for offset update based on reponse.row_count would greatly benefit developers using the API.

Here is the change I want to implement