1433: Improve collection screen

[LeandraH]

Short Description

Just getting #1506 from a fork into our repo

Resolved Issues

Fixes a part of #1433

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[deliverino]

LLM Review (verdigado-think)

React/TypeScript Correctness

• src/routes/user-vocabulary-list/components/ListEmptyContent.tsx: The transition from a implicit return to a function block to handle the hasNoWords logic is clean and correctly typed.

Accessibility

• src/components/FavoriteButton.tsx: Good addition of accessibilityLabel based on the favorite state. This ensures screen-reader users know whether they are adding or removing an item.

Testing

• src/routes/favorites/__tests__/FavoritesScreen.spec.tsx: New test file correctly covers both the empty state (verifying the new hints) and the populated state.
• src/components/__tests__/FavoriteButton.spec.tsx and src/routes/user-vocabulary-list/__tests__/UserVocabularyListScreen.spec.tsx: Tests were properly updated to reflect the new labels and accessibility properties.

Commit Messages

• The commits follow the project convention (<Issue key>: Message).
• Commit 505d085a mentions using heart icons, but this change is not present in the final diff. However, commit 78906e5a explicitly states "Narrow scope to empty-state hints and a11y labels", which explains why the icon changes were removed. The final state is consistent with the refined scope.

General Observations

• The PR effectively improves discoverability by providing textual hints in empty states, which is a positive UX improvement.
• The release notes file is correctly provided.
• No changes to navigation or sensitive data were detected.
• No labels are required as these are user-facing enhancements.