feat: modify `stops.txt` to be conditionally required

[cka-y]

Summary:

Modifies stops.txt to be conditionally required. Logic: If stops.txt doesn't exist, only trigger a missing_required_file notice if locations.geojson also doesn't exist.

Please make sure these boxes are checked before submitting your pull request - thanks!

• [x] Run the unit tests with gradle test to make sure you didn't break anything
• [ ] Add or update any needed documentation to the repo
• [x] Format the title like "feat: [new feature short description]". Title must follow the Conventional Commit Specification(https://www.conventionalcommits.org/en/v1.0.0/).
• [x] Linked all relevant issues
• [ ] Include screenshot(s) showing how this pull request works and fixes the issue(s)

[github-actions[bot]]

📝 Acceptance Test Report

📋 Summary

✅ The rule acceptance has passed for commit 25b0c7223c5d06e1e49072fa260bbdfae9f45cb8 Download the full acceptance test report here (report will disappear after 90 days).

📊 Notices Comparison

New Errors (0 out of 1588 datasets, ~0%) ✅

No changes were detected due to the code change.

Dropped Errors (0 out of 1588 datasets, ~0%) ✅

No changes were detected due to the code change.

New Warnings (0 out of 1588 datasets, ~0%) ✅

No changes were detected due to the code change.

Dropped Warnings (0 out of 1588 datasets, ~0%) ✅

No changes were detected due to the code change.

🛡️ Corruption Check

0 out of 1588 sources (~0 %) are corrupted.

⏱️ Performance Assessment

📈 Validation Time

Assess the performance in terms of seconds taken for the validation process.

| Time Metric | Dataset ID | Reference (s) | Latest (s) | Difference (s) | |-----------------------------|-------------------|----------------|----------------|----------------| | Average | -- | 4.03 | 4.07 | ⬆️+0.03 | | Median | -- | 1.42 | 1.48 | ⬆️+0.06 | | Standard Deviation | -- | 11.24 | 11.28 | ⬆️+0.03 | | Minimum in References Reports | ar-buenos-aires-subterraneos-de-buenos-aires-subte-gtfs-6 | 0.51 | 0.66 | ⬆️+0.16 | | Maximum in Reference Reports | gb-unknown-uk-aggregate-feed-gtfs-2014 | 285.87 | 288.37 | ⬆️+2.50 | | Minimum in Latest Reports | us-california-city-of-wasco-gtfs-1788 | 0.53 | 0.55 | ⬆️+0.01 | | Maximum in Latest Reports | gb-unknown-uk-aggregate-feed-gtfs-2014 | 285.87 | 288.37 | ⬆️+2.50 |

[github-actions[bot]]

📝 Acceptance Test Report

📋 Summary

✅ The rule acceptance has passed for commit 238cdd7fdfb52498016f6a3aee5229c7f5caa8cd Download the full acceptance test report here (report will disappear after 90 days).

📊 Notices Comparison

New Errors (0 out of 1588 datasets, ~0%) ✅

No changes were detected due to the code change.

Dropped Errors (0 out of 1588 datasets, ~0%) ✅

No changes were detected due to the code change.

New Warnings (0 out of 1588 datasets, ~0%) ✅

No changes were detected due to the code change.

Dropped Warnings (0 out of 1588 datasets, ~0%) ✅

No changes were detected due to the code change.

🛡️ Corruption Check

0 out of 1588 sources (~0 %) are corrupted.

⏱️ Performance Assessment

📈 Validation Time

Assess the performance in terms of seconds taken for the validation process.

| Time Metric | Dataset ID | Reference (s) | Latest (s) | Difference (s) | |-----------------------------|-------------------|----------------|----------------|----------------| | Average | -- | 4.03 | 4.07 | ⬆️+0.04 | | Median | -- | 1.43 | 1.47 | ⬆️+0.04 | | Standard Deviation | -- | 11.46 | 11.45 | ⬇️-0.01 | | Minimum in References Reports | us-california-flex-v2-developer-test-feed-2-gtfs-1818 | 0.51 | 0.55 | ⬆️+0.05 | | Maximum in Reference Reports | gb-unknown-uk-aggregate-feed-gtfs-2014 | 296.41 | 297.26 | ⬆️+0.85 | | Minimum in Latest Reports | us-oregon-hut-airport-shuttle-gtfs-635 | 0.68 | 0.52 | ⬇️-0.16 | | Maximum in Latest Reports | gb-unknown-uk-aggregate-feed-gtfs-2014 | 296.41 | 297.26 | ⬆️+0.85 |