Finalise fixes to photo uploader workflow (separate dialogs, review map, edge cases & resiliency)

[konishon]

What type of PR is this? (check all applicable)

• 🍕 Feature
• 🐛 Bug Fix
• 📝 Documentation
• 🧑‍💻 Refactor
• ✅ Test
• 🤖 Build or CI
• ❓ Other (please specify)

Related Issue

Fixes #713 & Fixes #715

edit by @spwoodcock: Also fixes #701 fixes #719 fixes #720 fixes #504

Describe this PR

TBA

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Alternative Approaches Considered

TBA

Did you attempt any other approaches that are not documented in code?

Review Guide

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Checklist before requesting a review

• 📖 Read the HOT Code of Conduct: https://docs.hotosm.org/code-of-conduct
• 👷‍♀️ Create small PRs. In most cases, this will be possible.
• ✅ Provide tests for your changes.
• 📝 Use descriptive commit messages.
• 📗 Update any related documentation and include any relevant screenshots.

[optional] What gif best describes this PR or how it makes you feel?

[konishon]

Before:

1. Map shows nothing if images lack GPS
2. Cancelled uploads leave duplicates in S3/DB
3. No user feedback on cancellation

After

1. Map displays blank on first visit to Image Classification (step 02) because MapLibre initializes before the mapData query completes.
2. Map shows located images + sidebar shows unlocated images
3. Images show rejection reason in text for eg, "Blurry (Sharpness: 3.2, Minimum: 100)
4. Uppy cancel will do automatic DB/S3 cleanup
5. Toast notification: "Upload cancelled. Staging images cleared."
6. User can re-upload without duplicate conflicts

I am adding automated tests for the following manual tests

• Upload batch WITH GPS images and verify map displays markers
• Upload batch WITHOUT GPS and verify "No GPS Location" section shows
• Upload then click Uppy cancel and verify toast + logs show cleanup
• Re-upload same batch and verify no duplicates

[spwoodcock]

Looking good!

[spwoodcock]

I think we are good to go! The tests are failing because of issues with forked repos I believe - they all pass locally