Capitalize foreign language name clean

[alexfigtree]

What are the relevant tickets?

Fixes, closes https://github.com/mitodl/hq/issues/11648

Description (What does it do?)

Ensuring that first word for languages is capitalized, as per CTDL standards (see ticket).

How can this be tested?

• Run new test added to dashboardViewModel.test.ts‎

[github-actions]

OpenAPI Changes

No changes detected

View full changelog

Unexpected changes? Ensure your branch is up-to-date with main (consider rebasing).

[Copilot]

Pull request overview

This PR updates the Dashboard courseware variant labeling so that native language names are displayed with the first word capitalized (to align with CTDL/CLDR “standalone” casing expectations), and adjusts related frontend tests accordingly.

Changes:

• Apply first-word capitalization to resolved native language names returned via Intl.DisplayNames (and resolved static fallbacks).
• Track whether a language label is truly “resolved” vs a raw locale code, to avoid applying casing rules to unresolved codes.
• Update/extend tests to assert the new casing behavior and to make label-matching assertions case-insensitive.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
frontends/main/src/app-pages/DashboardPage/CoursewareDisplay/VariantPicker.test.tsx	Makes label assertions case-insensitive to accommodate capitalized language names.
frontends/main/src/app-pages/DashboardPage/CoursewareDisplay/model/dashboardViewModel.ts	Implements first-word capitalization for resolved native language labels; preserves unresolved locale codes.
frontends/main/src/app-pages/DashboardPage/CoursewareDisplay/model/dashboardViewModel.test.ts	Adds/updates tests for capitalized language labels and first-word-only capitalization behavior.

[daniellefrappier18]

This looks great. 👍 For future PRs like this one, it can be really helpful to include a quick before/after screenshot (see below) — it gives reviewers immediate context on the visual change and makes it clear where to verify things.

BEFORE

AFTER