[dataquery + login] Translate Terms of Use menu label and popup text

[arnav-makkar]

Brief summary of changes

• Updated shared policy rendering so Terms of Use is localized consistently across both login and dataquery views.
• Refactored PolicyButton to use withTranslation('loris') and literal t(...) msgids for default policy entries (dataquery_example, login_example).
• Added translation coverage for the policy nav label, popup title, popup body, and accept/decline button text.
• Preserved safe fallback behavior: unmapped policy names/fields continue to display backend-provided text unchanged.
• Added translation entries for all supported UI languages (en, fr, ja, hi, es).

I do not have experience with Spanish or Japanese, so a strict review will be required for these translations.
Please let me know whatever changes required, and I'll be happy to incorporate them!

Screenshots

Dataquery Tool:

Login Page:

Link(s) to related issue(s)

• Resolves [dataquery + login] "Terms of Use" not translated #10263