Reset client auth source if not valid

[cicnavi]

Fixes #239

This change simply unsets invalid auth source in client data before the form is shown to avoid unhandled exception.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 50.46%. Comparing base (9989c82) to head (b3be9cb).
Report is 1 commits behind head on wip-version-6.

Additional details and impacted files

@@                 Coverage Diff                 @@
##             wip-version-6     #280      +/-   ##
===================================================
+ Coverage            50.12%   50.46%   +0.33%     
- Complexity            1466     1471       +5     
===================================================
  Files                  144      146       +2     
  Lines                 6376     6385       +9     
===================================================
+ Hits                  3196     3222      +26     
+ Misses                3180     3163      -17     

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