display "module" on b2b cards and module rows

[gumaerc]

What are the relevant tickets?

Closes https://github.com/mitodl/hq/issues/12216

Description (What does it do?)

This PR restores language surrounding "Modules" that are actually either a Course or a Program behind the scenes, but need to be displayed differently depending on the context. This includes any course card displayed on a B2B contract and any module row card in a "program as course" aka a Program with display_mode set to "course." This is accomplished by passing an isModule flag through the cards into the card type indicator.

Screenshots (if appropriate):

How can this be tested?

• Make sure you have an instance of MITx Online started and connected to Learn as described in the readme
• Your test user should have at least one B2B contract assigned to them as well as a B2C enrollment that contains a "program as course"
• View the B2B contract in the dashboard, and the "program as course" in the My Learning section of the dashboard home page
• Ensure that "Module" is displayed in the upper left where applicable

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OpenAPI Changes

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[Copilot]

Pull request overview

This PR updates dashboard course card rendering to show “Module” instead of “Course” in contexts where the underlying resource is a Course/Program but should be presented as a module (B2B contract cards and “program-as-course” module rows).

Changes:

• Add an isModule flag that propagates through CoursewareCard into enrolled/unenrolled card variants.
• Update EnrolledCourseCard and UnenrolledCourseCard to render a dynamic card type label ("Module" vs "Course"), including automatic "Module" labeling for B2B enrollments/contract-page resources.
• Add/extend frontend tests to verify the label behavior for non-B2B, B2B, and isModule scenarios (including module rows in ProgramAsCourseCard).

Reviewed changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
frontends/main/src/app-pages/DashboardPage/CoursewareDisplay/UnenrolledCourseCard.tsx	Adds isModule prop and dynamic "Module"/"Course" label logic for unenrolled cards (B2B-aware).
frontends/main/src/app-pages/DashboardPage/CoursewareDisplay/UnenrolledCourseCard.test.tsx	Adds tests covering label behavior for unenrolled cards (non-B2B, B2B, and isModule).
frontends/main/src/app-pages/DashboardPage/CoursewareDisplay/ProgramAsCourseCard.tsx	Passes isModule to module-row CoursewareCard instances.
frontends/main/src/app-pages/DashboardPage/CoursewareDisplay/ProgramAsCourseCard.test.tsx	Adds test ensuring module rows display "Module" (covers both enrolled and unenrolled module rows).
frontends/main/src/app-pages/DashboardPage/CoursewareDisplay/EnrolledCourseCard.tsx	Adds isModule prop and dynamic "Module"/"Course" label logic for enrolled cards (B2B-aware).
frontends/main/src/app-pages/DashboardPage/CoursewareDisplay/EnrolledCourseCard.test.tsx	Adds tests covering label behavior for enrolled cards (non-B2B, B2B, and isModule).
frontends/main/src/app-pages/DashboardPage/CoursewareDisplay/CoursewareCard.tsx	Adds isModule to shared display props and passes it through to enrolled/unenrolled card implementations.