SDK-213 Authentication Retry logic fails with invalid JWT token

[joaodordio]

🔹 Jira Ticket(s)

• SDK-213

✏️ Description

When multiple network requests fail simultaneously with 401 JWT errors, only the first request gets retried after token refresh. Subsequent requests are silently dropped because their retry callbacks are not queued when a token refresh timer is already active.

Root Cause

In AuthManager.scheduleAuthTokenRefreshTimer(), when isTimerScheduled is true, the method returns early without storing the callback, causing it to be lost.

Solution

• Added thread-safe callback queue (pendingSuccessCallbacks) to store retry callbacks when timer is active
• Modified scheduleAuthTokenRefreshTimer to queue callbacks instead of dropping them
• All queued callbacks are invoked when token refresh completes
• Callbacks are properly cleared on logout and when no user is available

[codecov]

Codecov Report

❌ Patch coverage is 95.74468% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 69.44%. Comparing base (abbab6a) to head (6bf6e49).

Files with missing lines	Patch %	Lines
swift-sdk/Internal/RequestProcessorUtil.swift	90.47%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #984      +/-   ##
==========================================
+ Coverage   69.26%   69.44%   +0.18%     
==========================================
  Files         109      109              
  Lines        8917     8944      +27     
==========================================
+ Hits         6176     6211      +35     
+ Misses       2741     2733       -8     

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