fix: Disable base64 optimization in ReactNative

[FrederikBolding]

Our base64 encoding optimization does not run in React Native, because React Native doesn't support creating Files/Blobs from buffers.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.28%. Comparing base (fcdb865) to head (a4b2363).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3564   +/-   ##
=======================================
  Coverage   98.28%   98.28%           
=======================================
  Files         417      417           
  Lines       11764    11765    +1     
  Branches     1829     1830    +1     
=======================================
+ Hits        11562    11563    +1     
  Misses        202      202           

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