fix: Avoiding signing out users when the token refresh fails due to no connectivity

[ruisebas]

Issue #, if available:

• User is logged out when app launched on offline #103

Description of changes:

This PRs fixes the issue when the access token is expired on launch but the device has no connectivity.
Instead of just signing out the user, we'll keep them signed in. This is only done when the user was already signed in.

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.

[codecov]

Codecov Report

Attention: Patch coverage is 63.63636% with 8 lines in your changes missing coverage. Please review.

Project coverage is 44.39%. Comparing base (a18f030) to head (563315b).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
...rces/Authenticator/Models/AuthenticatorState.swift	0.00%	7 Missing ⚠️
...henticator/Extensions/AuthError+Connectivity.swift	92.85%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #104      +/-   ##
==========================================
- Coverage   44.46%   44.39%   -0.07%     
==========================================
  Files          43       44       +1     
  Lines        2456     2462       +6     
==========================================
+ Hits         1092     1093       +1     
- Misses       1364     1369       +5     

Flag	Coverage Δ
Authenticator	44.39% <63.63%> (-0.07%)	⬇️

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[harsh62]

@ruisebas You can update the change log too, so that we don't need another PR for that..