[Sentry] RefreshTokenHttpError: Failed to refresh JWT token (HTTP 401)

Sentry Issue: [METAMASK-MOBILE-5K92](https://metamask.sentry.io/issues/7320925153/?referrer=github_integration)

```
SeedlessOnboardingControllerError: SeedlessOnboardingController - Invalid refresh token
at tryCallOne (app:///main.jsbundle:1:1181)
at anonymous (app:///main.jsbundle:1:1875)
...
(5 additional frame(s) were not displayed)

RefreshTokenHttpError: Failed to refresh JWT token (HTTP 401)
at RefreshTokenHttpError (app/core/OAuthService/AuthTokenHandler.ts:23:5)
at ?anon_0_ (app/core/OAuthService/AuthTokenHandler.ts:75:38)
at tryCallOne (app:///main.jsbundle:1:1181)
at anonymous (app:///main.jsbundle:1:1875)
...
(8 additional frame(s) were not displayed)
```

Start by reading app/core/OAuthService/AuthTokenHandler.ts at lines 23 and 75, then correlate the Sentry trace with the refresh-token flow. Trace the HTTP 401 path; done means the refresh-token failure is resolved and the reported error no longer occurs.

Written by the indexing model from the issue text.