fix: Prevent iterator failure by skipping files that fail to load

[mbsantiago]

This PR improves the experience in audioclass when using TF dataset iterators to iterate over recordings. Before, the iteration would fail as soon as a single data loading error was encountered. Here we include the minimal changes needed to ignore those errors and skip the files that could not be loaded.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.01%. Comparing base (8af8bc0) to head (434ec18).
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main       #8   +/-   ##
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  Coverage   91.01%   91.01%           
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  Files          17       17           
  Lines         590      590           
  Branches       59       59           
=======================================
  Hits          537      537           
  Misses         28       28           
  Partials       25       25           

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