feat: add RV dynamic slot to course card action slot

[MaxFrank13]

Summary

Adds the DynamicExperienceSlot wrapper to the CourseCardActionSlot. The DynamicExperienceSlot has an ErrorBoundary to render the default 2U UpgradeButton when RV's interface errors out. This matches the way it's been done in the advertisements repository for the UpgradeModal (here).

Related ticket / issue

• Ticket: SUBS-402

Related documentation / decision records

• Documentation: https://2u-internal.atlassian.net/wiki/spaces/subs/pages/3342925835/DynamicExperienceSlot+Error+Handling

Reviewer guidance

This will need to be tested in stage with the rest of the RV script set up in order to confirm that it is working correctly. We do have the UpgradeModal implementation that we can at least cross check with.

To run locally:

• pull down branch to local environment
• npm run start
• You should see the UpgradeButton render as the DynamicExperienceSlot will error out

Screenshots

No visual changes.

Checklist

• PR title is meaningful and describes the change clearly
• Summary of what changed
• Link to the related ticket or issue
• Link to related documentation and/or decision records when applicable
• Provided local setup and testing instructions
• Screenshots for UI changes, if applicable

[Copilot]

Pull request overview

Adds a Revenue Velocity (RV) dynamic experience widget as the default content for the learner dashboard’s course card action plugin slot, with an error boundary fallback to the existing 2U upgrade CTA to keep the UI functional if the RV integration fails.

Changes:

• Wraps CourseCardActionSlot default content in ErrorBoundary to provide a resilient fallback.
• Renders DynamicExperienceSlot in the course card action slot using the appropriate placement and tenant identifiers.

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