feat: warn when relative dates are past due and can't be shifted

[DanielVZ96]

Description

When the course_experience.relative_dates_disable_reset flag is set to true in self paced courses, warnings that otherwise allowed learners to shift deadlines don't appear. This PRs shows warnings in this case, with the sole difference of not allowing to shift dates.

Useful information to include:

• Which edX user roles will this change impact?: Learner

Testing instructions

1. Add the following Waffle Flags (with Everyone: Yes):

   1. studio.custom_relative_dates
   2. course_experience.relative_dates
   3. course_experience.relative_dates_disable_reset

2. Go to Course_Date_Signals -> Self paced relative dates configs and add a config with Enabled: Yes.

3. Create a new course in Studio.

4. Go to Settings -> Schedule & Details and set the pacing to Self-Paced. Click "Save Changes".

5. Set a past Course Start Date. Click "Save Changes".

6. Create a new subsection in the course. Mark it as graded as "Homework" and set "Due in" to 1 week.

7. Create a Problem Block (e.g., Checkboxes) in the subsection and publish it.

8. Log in as an audit user and enroll yourself in a course.

9. As an admin, go to Schedules -> Schedules and find the schedule for the audit user in this new course. Change the Start date to a year ago and Save.

10. As an audit user, visit the Problem and check that there's a warning about not being able to shift the relative dates (see screenshot bellow), that the Submit button can no longer be enabled, and that should be a "Past due" pill near the due date above this Problem.

11. You should also see these deadlines on the Course Outline page.

12. Set the course_experience.relative_dates_disable_reset to No

13. Revisit the Problem with the audit user. Check that the warning now lets you shift the relative dates. (second screenshot)

Screenshots

course_experience.relative_dates_disable_reset set to false:

course_experience.relative_dates_disable_reset set to true (old behavior, but still good to check):

Not past due date:

Private-ref: BB-8542

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[Agrendalath]

We don't use any of these attributes. Technically, we could return this right after checking if RELATIVE_DATES_DISABLE_RESET_FLAG.is_enabled(course_key): instead of making separate helper functions.

[DanielVZ96]

good idea!

[Agrendalath]

👍

• I tested this: checked that the warning is displayed correctly
• I read through the code
• I checked for accessibility issues: n/a
• Includes documentation: n/a
• Added to the Code Drift project board (for backports)

[DanielVZ96]

Tests failed with: Error: Failed to CreateArtifact: Received non-retryable error: Failed request: (409) Conflict: an artifact with this name already exists on the workflow run

[openedx-webhooks]

@DanielVZ96 🎉 Your pull request was merged! Please take a moment to answer a two question survey so we can improve your experience in the future.

[edx-pipeline-bot]

2U Release Notice: This PR has been deployed to the edX staging environment in preparation for a release to production.

[edx-pipeline-bot]

2U Release Notice: This PR has been deployed to the edX production environment.