fix: App crash on primary email change from web

[farhan-arshad-dev]

Description

LEARNER-9831

• Force logout the Learner on primary email change from other sessions.
• Replace response.toString() with response.peekBody(Long.MAX_VALUE).string(). Ref: https://stackoverflow.com/a/60750929

How to test

• Login in the app.
• Use the user and Login on the web.
• Change the primary email from the web Account Settings screen.
• Pull to refresh the app to refresh the screen.
• The app should force logout the user cuz the session expired by the server on the change of primary email.

Acceptance Criteria

• The app shouldn't crash at any point cuz of the primary email change.

[codecov[bot]]

Codecov Report

Attention: 3 lines in your changes are missing coverage. Please review.

Comparison is base (2b52504) 1.07% compared to head (dcdd5bb) 1.07%.

Files	Patch %	Lines
...tp/authenticator/OauthRefreshTokenAuthenticator.kt	0.00%	3 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #1848 +/- ## ======================================== Coverage 1.07% 1.07% Complexity 137 137 ======================================== Files 538 538 Lines 26326 26325 -1 Branches 3395 3395 ======================================== Hits 284 284 + Misses 26015 26014 -1 Partials 27 27 ```

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.

[miankhalid]

@farhan-arshad-dev great work in doing an in-depth discovery and finding the fix for this pesky issue 👏 🌟