[FE] My VA: Implementation of changes to Cerner handling

[ajakabcin]

Background

As outlined in #67349 we are simplifying the way we handle Cerner users on My VA by eliminating the "Cerner alert" message and instead opting to show them a link to the new MHV landing page as well as all the tool links in the link list.

Updated designs:

• desktop
• mobile

Tasks

• [x] Open PR to add feature flag on vets-api – name: my_va_remove_cerner_message
• [x] Put the following changes behind a feature flag on vets-website
  • [x] Remove cerner message
  • [x] Implement logic to show "link list" per designs
• [x] Update tests
• [x] Let PM know this is ready for validation

Acceptance Criteria

• [ ] Cerner users see a the list of health care tool links as follows:

Validation

• Who can validate this ticket? any team member
• How can this work be validated?
  1. Log into staging with a cerner user
  2. Confirm health care link list appears on My VA

[allisonlu]

@ajakabcin

Two questions!

1. Should these changes be behind a feature flag?
2. Is this the only Cerner message we're removing?

[ajakabcin]

@allisonlu

1. Yes :)
2. We should get rid of the bottom image all together in the code. It's old. We should keep the top image in the code/available via feature flag in case for some reason we need to roll these changes to Cerner experience back. That way we have this message as an option.

Thank you!

[allisonlu]

@ajakabcin

according to the frontend deployment dashboard, these changes should be on staging! but i'm not sure what user has Cerner.

here's the feature flag when you find a user: https://staging-api.va.gov/flipper/features/my_va_remove_cerner_message

[ajakabcin]

Confirmed on staging with user 36!

[ajakabcin]

Hmm something seems different today - now seeing text about appointments for the same user. Allison is investigating.

[allisonlu]

@ajakabcin

the copy is now not appearing for user 36! can you confirm this too?

[ajakabcin]

Confirmed and reviewed by Samara as well! We can discuss when we want to put this out to users in huddle today

[ajakabcin]

Complete! We'll turn the flag on in prod on 11/27 (after the holiday) via #70309