ci: migrate to shared workflows

[mirekys]

❤️ Thank you for your contribution!

Description

• Replaces js-tests with shared inveniosoftware/workflows
• Updates Node test matrix to 22.x, 24.x, 26.x
• Adds run-js-linter.sh and run-js-tests.sh scripts
• Updates Node requirement to >=22.0.0

Part of: inveniosoftware/rfcs#112

Checklist

Ticks in all boxes and 🟢 on all GitHub actions status checks are required to merge:

• I'm aware of the code of conduct.
• I've created logical separate commits and followed the commit message format.
• I've added relevant test cases.
• I've added relevant documentation.
• I've marked translation strings.
• I've identified the copyright holder(s) and updated copyright headers for touched files (>15 lines contributions).
• I've NOT included third-party code (copy/pasted source code or new dependencies).
  • If you have added third-party code (copy/pasted or new dependencies), please reach out to an architect on Discord.

Frontend

• I've followed the CSS/JS and React guidelines.
• I've followed the web accessibility guidelines.
• I've followed the user interface guidelines.

Reminder

By using GitHub, you have already agreed to the GitHub’s Terms of Service including that:

1. You license your contribution under the same terms as the current repository’s license.
2. You agree that you have the right to license your contribution under the current repository’s license.