<!-- Add the related story/sub-task/bug number, like Resolves#123, or
remove if NA -->
**Related issue:** Resolves#36355
Docs PR: #39830
# Checklist for submitter
- [x] Changes file added for user-visible changes in `changes/`,
`orbit/changes/` or `ee/fleetd-chrome/changes`.
## Testing
- [x] Added/updated automated tests
- [x] QA'd all new/changed functionality manually
<!-- This is an auto-generated comment: release notes by coderabbit.ai
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## Summary by CodeRabbit
## Bug Fixes
* Fixed a database error that could occur when requesting large activity
lists without specifying pagination parameters
* Enforced a maximum limit of 10,000 items per request for activities
endpoints to improve API stability
## Tests
* Added validation test to ensure the per_page limit is properly
enforced
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
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Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>
Co-authored-by: Copilot <198982749+Copilot@users.noreply.github.com>
