Fixes proxy issue with browser auth

[gingi]

See this msal-node issue.

[codecov]

Codecov Report

Attention: Patch coverage is 12.50000% with 35 lines in your changes missing coverage. Please review.

Project coverage is 80.28%. Comparing base (fad86f7) to head (70b8ac3).

Files with missing lines	Patch %	Lines
...ktop/src/client/core/batch-explorer-application.ts	0.00%	17 Missing ⚠️
...esktop/src/client/core/aad/proxy-network-client.ts	16.66%	15 Missing ⚠️
desktop/src/client/core/aad/auth-provider.ts	50.00%	2 Missing ⚠️
...nt/core/i18n/client-translations-loader.service.ts	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2973      +/-   ##
==========================================
- Coverage   80.33%   80.28%   -0.06%     
==========================================
  Files        1462     1463       +1     
  Lines       46080    46119      +39     
  Branches     5768     5772       +4     
==========================================
+ Hits        37020    37025       +5     
- Misses       8877     8911      +34     
  Partials      183      183              

Files with missing lines	Coverage Δ
...c/@batch-flask/compiler/dev-translations-loader.ts	20.58% <ø> (ø)
...nt/core/i18n/client-translations-loader.service.ts	85.71% <0.00%> (ø)
desktop/src/client/core/aad/auth-provider.ts	65.00% <50.00%> (-0.52%)	⬇️
...esktop/src/client/core/aad/proxy-network-client.ts	16.66% <16.66%> (ø)
...ktop/src/client/core/batch-explorer-application.ts	14.85% <0.00%> (-1.37%)	⬇️

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