fix: Use arrayBuffer for fetching and caching local Snaps

[FrederikBolding]

Fixes a problem with fetching local Snaps on mobile. React Native does not support blob well, so we can use arrayBuffer and cache Uint8Array instead.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 94.48%. Comparing base (8815d9b) to head (72dca23).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2884      +/-   ##
==========================================
- Coverage   94.49%   94.48%   -0.01%     
==========================================
  Files         486      486              
  Lines       10401    10397       -4     
  Branches     1594     1594              
==========================================
- Hits         9828     9824       -4     
  Misses        573      573              

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