✨ One-time in-app notification about work experience updates

[petertgiles]

✨ Feature

We would like to send out a one-time in-app notification about updates to the work experience fields.

🕵️ Details

Message EN: We've updated the work experience options on your profile. Please review your career timeline and ensure it’s up to date. Message FR: TODO URL when clicked EN: /en/applicant/career-timeline URL when clicked FR: /fr/applicant/career-timeline

🎨 Design

📸 Screenshot

🙋‍♀️ Proposed Implementation

Prepare an artisan command that queues up all the notifications on demand.

🌎 Localization

✅ Acceptance Criteria

• [ ] In-app notification can be triggered when desired (ie by artisan command)
• [ ] Notification is localized.
• [ ] Notification links to user experiences page
• [ ] Notification is in-app only
• [ ] Notification gets sent to everyone (systems level notification)

🛑 Blockers

### Blocked By
- [ ] https://github.com/GCTC-NTGC/gc-digital-talent/issues/11864

[github-actions[bot]]

Status: Error :warning:

Issues blocking this PR:

• NaN :warning: Issue/PR not found

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  This comment was automatically written by the Blocking Issues bot, and this PR will be monitored for further progress.