Fix for hasOwn

[SchrodingersGat]

• Also add null check on function call
• Closes [PUI] Login silently fails with MFA enabled #8595

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[codecov]

Codecov Report

Attention: Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.

Project coverage is 84.64%. Comparing base (3149ae7) to head (d33e2db).
Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
src/frontend/src/functions/auth.tsx	0.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #8600      +/-   ##
==========================================
- Coverage   84.66%   84.64%   -0.03%     
==========================================
  Files        1189     1189              
  Lines       54279    54280       +1     
  Branches     2051     2052       +1     
==========================================
- Hits        45957    45945      -12     
- Misses       7813     7823      +10     
- Partials      509      512       +3     

Flag	Coverage Δ
pui	69.17% <0.00%> (-0.13%)	⬇️

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