BUG - sev-2 - [iOS/Android/All] - Increase in session refresh error rates (which forces users to re-authenticate)

[TKDickson]

What happened?

We received a report from folks in the Identity DSVA channel that there's been an increase in session refresh error rates, since about mid-July.

https://vagov.ddog-gov.com/metric/explorer?fromUser=true&start=1717444052000&end=1725392852000&paused=false

The user experience for this is logging into the app, and then (within 45 days, with biometrics enabled) being logged out of the app and having to use UN/PW to log in again. This has been reported by at least one production user.

Specs:

• Device:
• OS:
• User Account:
• Accessibility State:

Steps to Reproduce

unknown

Desired behavior

Should be maintaining login session tokens for the full 45 days, so folks can log in easier with biometrics

Acceptance Criteria

Bug Severity - BE SURE TO ADD THE SEVERITY LABEL

See [Bug Tracking](https://department-of-veterans-affairs.github.io/va-mobile-app/docs/QA#issue-severity) for details on severity levels

• Impact: High
• Frequency: Low

• 2 - High

Linked to Story

Screen shot(s) and additional information

Full JSON response for services related to issue (expand/collapse)

Ticket Checklist

• [ ] Steps to reproduce are defined
• [ ] Desired behavior is added
• [ ] Labels added (front-end, back-end, global, Health, relevant feature, accessibility, etc)
• [ ] Estimate of 1 added (for front-end tickets)
• [ ] Added either to the relevant feature epic (if found during new feature implementation), or the relevant team's bug epic (Global, Health & Benefits, API, QART)

[timwright12]

Slack thread for additional context: https://dsva.slack.com/archives/C04LFGY2SJK/p1725392845790499