fix: new pmtile url generation using visualization_dataset_id

[Alessandro100]

Summary:

closes #1439

Current state the pmtiles url for gtfs visualizations uses the latest dataset id to generate the url. This is not always true, instead it should use the visualization_dataset_id value from the feed endpoint instead

Expected behavior:

The pmtile url for stops and routes should be generated using the visualization_dataset_id parameter. If this value does not exist, then it will default to datasetLatest.id

Testing tips:

Go on feeds that you know have visualizations and make sure they appear

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

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

[github-actions]

*Lighthouse ran on https://mobility-feeds-dev--pr-1440-u9qtij79.web.app/ * (Desktop)
⚡️ HTML Report Lighthouse report for the changes in this PR:

Performance	Accessibility	Best Practices	SEO
🟠 85	🟢 100	🟢 100	🟢 100

*Lighthouse ran on https://mobility-feeds-dev--pr-1440-u9qtij79.web.app/feeds * (Desktop)
⚡️ HTML Report Lighthouse report for the changes in this PR:

Performance	Accessibility	Best Practices	SEO
🟠 65	🟢 91	🟢 100	🟢 100

*Lighthouse ran on https://mobility-feeds-dev--pr-1440-u9qtij79.web.app/feeds/gtfs/mdb-2126 * (Desktop)
⚡️ HTML Report Lighthouse report for the changes in this PR:

Performance	Accessibility	Best Practices	SEO
🟠 89	🔴 0	🟢 93	🟢 100

*Lighthouse ran on https://mobility-feeds-dev--pr-1440-u9qtij79.web.app/feeds/gtfs_rt/mdb-2585 * (Desktop)
⚡️ HTML Report Lighthouse report for the changes in this PR:

Performance	Accessibility	Best Practices	SEO
🟢 93	🟠 88	🟢 100	🟢 100

*Lighthouse ran on https://mobility-feeds-dev--pr-1440-u9qtij79.web.app/gbfs/gbfs-flamingo_porirua * (Desktop)
⚡️ HTML Report Lighthouse report for the changes in this PR:

Performance	Accessibility	Best Practices	SEO
🟢 99	🟢 100	🟢 100	🟢 100

[github-actions]

Preview Firebase Hosting URL: https://mobility-feeds-dev--pr-1440-u9qtij79.web.app

[davidgamez]

LGTM