[FYST-1697] update StateInformationService to be locale aware

[jnf]

Link to pivotal/JIRA issue

FYST-1697

Is PM acceptance required? (delete one)

• Yes - don't merge until JIRA issue is accepted!

What was done?

instead of the StateInformationService knowing a state's name and taxation department, it now knows where to find the name and taxation department in our locale files. this lets us easily localize those proper nouns (if/when we want to) the same way we manage all other localized content. this is similar to the 'sin' value in the StateInformationService; it's not the software identifier itself, rather it's where to find it.

Slack threads with more context

• https://cfastaff.slack.com/archives/C087E6C7NBZ/p1737673798932829
• https://cfastaff.slack.com/archives/C087E6C7NBZ/p1737648072450549

How to test?

• Ensure page contents are properly localized when switching locales. Look for content strings that bring in a state_name parameter.

Screenshots (for visual changes)

Before

After

[github-actions]

Heroku app: https://gyr-review-app-5440-b91f6a470f50.herokuapp.com/
View logs: heroku logs --app gyr-review-app-5440 (optionally add --tail)

[mrotondo]

Looks good, thanks for doing this!

[sentry-io]

Suspect Issues

This pull request was deployed and Sentry observed the following issues:

• ‼️ InvalidStateCodeError: Invalid state code: NC (InvalidStateCodeError) StateFile::LandingPageController#edit View Issue

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