fix: Init WASM modules using Base64

[FrederikBolding]

This PR changes the WASM loader slightly to package the WASM source code using Base64 and decode it at runtime. This has multiple effects:

• Fixes an obscure OOM bug in Firefox that would only occur on Mac OS (possibly due to extremely large arrays?)
• Reduces bundle size for Snaps that leverage WASM
• Prevents bundler slowdown due to large arrays needing to be parsed by Babel

This adds minor overhead to initializing WASM bundles, but this seems worth it given the effects above.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 94.48%. Comparing base (03cd5d6) to head (76ef209).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2913      +/-   ##
==========================================
- Coverage   94.48%   94.48%   -0.01%     
==========================================
  Files         487      487              
  Lines       10429    10428       -1     
  Branches     1598     1598              
==========================================
- Hits         9854     9853       -1     
  Misses        575      575              

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