fix(ui): upgrade consumer apps to Nuxt 4 and DevTools

[Jacky-Pham]

Issue:

• GitHub: Repository security alerts; no corresponding GitHub issue
• JIRA: REGBACKLOG-14

Description of changes:

• Upgrade Nuxt from 3.15.4 to 4.5.2 in the Examiner, Host/PM, Platform, and Strata applications
• Upgrade @nuxt/devtools to 3.4.1 in all four consumer applications
• Align Nuxt Test Utils and Vitest with Nuxt 4
• Update Tailwind preset loading for Nuxt 4 module interop
• Regenerate the consumer application pnpm lockfiles and pin the upgraded packages
• Keep the consumer package-manager pins on pnpm 10.21.0 for upgraded Nuxt layer installs
• Update unit-test mocks for the Nuxt 4 app/router lifecycle and isolate Keycloak initialization in tests

These changes move the four STRR consumer applications to the supported Nuxt 4 release line and address the applicable Nuxt and DevTools security alerts.

Note:

This PR depends on #1785 and currently targets and references its branch so CI validates the upgraded base layer. After #1785 merges, restore the base-layer references to main and retarget this PR to main.

PR #1781 separately upgrades pnpm to 11 and may require a package and lockfile rebase depending on merge order.

---

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of the BC Registry and Digital Services BSD 3-Clause License

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.2% Duplication on New Code

See analysis details on SonarQube Cloud

[jimmypalelil]

is this just left over from testing?