GT-2494 Fix FirebaseRemoteConfig.get*Flow() extension methods

[frett]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 11 lines in your changes missing coverage. Please review.

Project coverage is 41.05%. Comparing base (23eb284) to head (12662f6).
Report is 2 commits behind head on master.

Files with missing lines	Patch %	Lines
...firebase/remoteconfig/FirebaseRemoteConfig+Flow.kt	0.00%	11 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2287      +/-   ##
==========================================
- Coverage   41.10%   41.05%   -0.05%     
==========================================
  Files         389      389              
  Lines        5768     5775       +7     
  Branches     1373     1373              
==========================================
  Hits         2371     2371              
- Misses       3079     3086       +7     
  Partials      318      318              

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