feat(content-uploader): uploads items order change

[dealwith]

Reverse the order of the items for the new uploads manager

Summary by CodeRabbit

• Bug Fixes
  • Improved upload item ordering in the content uploader: when the modernized uploads manager is enabled, newest items now appear first; the legacy view preserves the existing order.
  • Ensured the ordering change only affects what’s displayed and does not alter the uploader’s underlying item sequence.
• Tests
  • Added coverage to verify modern vs. legacy upload manager display order and confirm no internal item list mutation.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: d98bd8f3-a159-40f4-ae36-d99be9ab3acf

📥 Commits

Reviewing files that changed from the base of the PR and between 8aff306 and ef55e0f.

📒 Files selected for processing (2)

• src/elements/content-uploader/ContentUploader.tsx
• src/elements/content-uploader/__tests__/ContentUploader.test.js

🚧 Files skipped from review as they are similar to previous changes (2)

• src/elements/content-uploader/ContentUploader.tsx
• src/elements/content-uploader/tests/ContentUploader.test.js

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Walkthrough

ContentUploader now derives a separate item list for upload manager rendering, reversing the order only for modernized uploads. Tests cover modernized newest-first display, legacy ordering, and preservation of internal item state.

Changes

Upload manager item ordering

Layer / File(s)	Summary
Derived manager items and order tests src/elements/content-uploader/ContentUploader.tsx, src/elements/content-uploader/__tests__/ContentUploader.test.js	ContentUploader builds uploadsManagerItems from items based on enableModernizedUploads, uses that array for both upload manager branches, and adds tests for modernized ordering, legacy ordering, and non-mutation of state.items.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Possibly related PRs

• box/box-ui-elements#4571: This PR also changes ContentUploader.tsx rendering around enableModernizedUploads and the upload-manager item flow.
• box/box-ui-elements#4573: This PR is directly connected to the modernized upload manager item mapping and render path in ContentUploader.tsx.

Suggested reviewers

• olehrybak
• jfox-box

Poem

A bunny hopped through upload rows,
And sorted carrots, nose-to-toes.
Newest first for modern light,
Old ways kept their proper height.
No pawprints changed the state today —
Just tidy hops along the way 🐰

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title is concise and accurately reflects the main change to uploads item ordering in content-uploader.
Description check	✅ Passed	The description clearly states the main change and aligns with the repository's simple template requirements.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch order-change-uploads-items

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