Verify if we support `vue-router` v5

[JPeer264]

Problem Statement

Based on the docs we support vue-router v2-v4, but v5 is out since January 2026: https://npmx.dev/package/vue-router/v/5.0.0

Solution Brainstorm

Maybe we just have to add an E2E test and we're done.

Additional Context

No response

Priority

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[linear-code]

JS-3676