fix(i18n): localize toast accessibility labels

[bulunote]

Description

The shared Propel toast component does not provide locale-aware accessible names for its notification viewport or close control. As a result, assistive technology can receive no explicit label or an English library default even when the active Plane language is not English.

This PR localizes those hidden accessibility labels by:

• adding @plane/i18n as an explicit Propel dependency;
• setting the toast viewport label with the existing notifications translation key;
• setting each close control label with the existing close translation key; and
• adding a focused regression test that protects the translated labels and package dependency.

No new translation keys are introduced. The existing keys are already translated across all supported locales, including 通知 / 关闭 for Simplified Chinese and 通知 / 關閉 for Traditional Chinese.

This PR intentionally covers only toast accessibility text. Other visible localization surfaces are being kept in separate reviewable changes.

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• Feature (non-breaking change which adds functionality)
• Improvement (change that would cause existing functionality to not work as expected)
• Code refactoring
• Performance improvements
• Documentation update

Screenshots and Media (if applicable)

There is no visual change. The resulting accessible markup uses the active locale:

<BaseToast.Viewport aria-label={t("notifications")} />
<BaseToast.Close aria-label={t("close")} />

Test Scenarios

• Regression test: node --test --experimental-strip-types packages/i18n/scripts/__tests__/toast-accessibility-localization.test.ts
• pnpm turbo run build --filter=@plane/propel...
  • 6/6 build tasks completed successfully.
• tsc --noEmit -p packages/propel/tsconfig.json
• Changed-file OxLint with --deny-warnings
• Changed-file oxfmt check
• pnpm --filter @plane/i18n check:sync
  • all 19 locales contain the same 3,837 keys.
• git diff --check

References

• Part of [feature]: Expand localization coverage for hardcoded UI surfaces #9089.
• Extracted as a small, independently reviewable localization fix from the broader hard-coded UI audit.

Summary by CodeRabbit

• Accessibility

  • Added localized accessibility labels for toast notifications and their close buttons.
  • Toast labels now use the app’s existing translations for a more consistent experience across supported languages.

• Tests

  • Added coverage to verify translated toast labels and localization support.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: a0efca37-f75e-4e3c-8ec1-cfd4e9ccf485

📥 Commits

Reviewing files that changed from the base of the PR and between 1c8a60f and 9e4e977.

⛔ Files ignored due to path filters (1)

• pnpm-lock.yaml is excluded by !**/pnpm-lock.yaml

📒 Files selected for processing (3)

• packages/i18n/scripts/__tests__/toast-accessibility-localization.test.ts
• packages/propel/package.json
• packages/propel/src/toast/toast.tsx

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📝 Walkthrough

Walkthrough

Toast accessibility labels now use existing i18n translations. The Propel package declares @plane/i18n as a runtime dependency. A repository test verifies the implementation and dependency declaration.

Changes

Toast accessibility localization

Layer / File(s)	Summary
Localized toast labels packages/propel/src/toast/toast.tsx, packages/propel/package.json	The toast viewport and close button now receive translated aria-label values. @plane/i18n is added as a workspace dependency.
Localization implementation test packages/i18n/scripts/__tests__/toast-accessibility-localization.test.ts	The test verifies translation usage for notification and close labels and checks the workspace dependency declaration.

Estimated code review effort: 2 (Simple) | ~10 minutes

Suggested reviewers: sriramveeraghanta

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description check	✅ Passed	The description includes the required sections, explains the change, identifies the bug fix, documents tests, and states that no screenshots apply.
Title check	✅ Passed	The title clearly and concisely identifies the main change: localizing toast accessibility labels for internationalization.
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 unit tests (beta)

• Create PR with unit tests

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[CLAassistant]

All committers have signed the CLA.