Secure Messages: Update attachment size requirements (Mobile)

[MekoHong]

Description

The MHV Secure Messaging Team is working on migration of Secure Messaging from MyHealtheVet to VA.gov. They identified that va.gov has outdated file size requirements for supporting attachments. The APIs updated requirements are

• Increasing file size from 3MB to 6MB
• The total attachments size from 6MB to 10MB
• The total number of files remaining at 4

As part of this ticket we will need to

• Update validations to increased file size
• Update copy to reflect changes

Acceptance Criteria

- [x] Update validation files size rule for uploading files for secure messaging from 3MB to 6MB - [x] Update validation rule for total attachment size from 6MB to 10MB - [x] Update copy for Add file screen (click path: Messages>Compose a Message>Add Files>Attach file) Final copy for this screen: You can attach up to 4 files. Files can be in one of the following formats: doc, docx, gif, jpg, pdf, png, rtf, txt, xls, or xlsx. A single attachment can't exceed 6 MB. The total size of all attachments can't exceed 10 MB. Attachments aren't saved in drafts. - [ ] Update copy for Messages help screen (click path: Messages>Compose a Message>How to attach a file) Final copy for this section of this screen: **Note**: If you can't attach a file, make sure your file meets the size and format requirements: [bullet] You can attach up to 4 files. Files can be in one of the following formats: doc, docx, gif, jpg, pdf, png, rtf, txt, xls, or xlsx. [bullet] A single attachment can't exceed 6 MB. The total size of all attachments can't exceed 10 MB. Note to Engineering: We're only updating a portion of the copy in this screen (see screenshot of part of screen where copy is changing. No other copy changes outside of this section.)  **Accessibility Requirements** - Screen readers should read "MB" as megabytes" ## Notes & Open Questions - Dependencies/Roadblocks: - Any internal/external dependencies? - Test accounts needed? - Does this require QA? - Dev Notes: ## Ticket Checklist - [ ] Acceptance criteria defined - [X] Labels added (front-end, back-end, feature) - [X] Linked to an Epic

[TKDickson]

Test run 4532, all cases passed - visual and a11y content, as well as actual limits, have been updated and are working as expected.

Did a bunch of test case cleanup as well (the attachments test cases were old, badly-written, and many were overlapping/duplicative). Blech. It's much improved, if not yet perfect.