Remove common caught exception

[sliftist]

Float16Array construction always throws an exception, which is caught. This makes developing with Pause on caught exceptions annoying, because of the spurious caught errors.

The attached change removes a lot of these uncaught errors by immediately identifying any Array.isArray values as not being ArrayBuffers.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 87.08%. Comparing base (0d82f01) to head (d256c94).
Report is 6 commits behind head on master.

❗ Current head d256c94 differs from pull request most recent head d79920f. Consider uploading reports for the commit d79920f to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1156      +/-   ##
==========================================
+ Coverage   87.06%   87.08%   +0.01%     
==========================================
  Files          12       12              
  Lines         773      774       +1     
  Branches      146      147       +1     
==========================================
+ Hits          673      674       +1     
  Misses         54       54              
  Partials       46       46              

Flag	Coverage Δ
unittests	87.08% <100.00%> (+0.01%)	⬆️

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[sliftist]

@petamoriken thanks for reviewing the pull request so quickly! I accepted the change in github, so it should be updated now.