limit file list results to 1000 items

[purplecabbage]

Description

Related Issue

Motivation and Context

How Has This Been Tested?

Screenshots (if appropriate):

Types of changes

• [x] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• [x] I have signed the Adobe Open Source CLA.
• [x] My code follows the code style of this project.
• [ ] My change requires a change to the documentation.
• [ ] I have updated the documentation accordingly.
• [x] I have read the CONTRIBUTING document.
• [x] I have added tests to cover my changes.
• [x] All new and existing tests passed.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 100.00%. Comparing base (bd873f3) to head (d929eb9).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #155 +/- ## ========================================= Coverage 100.00% 100.00% ========================================= Files 5 5 Lines 567 568 +1 Branches 109 109 ========================================= + Hits 567 568 +1 ```

:umbrella: View full report in Codecov by Sentry.
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