[Fix] SameValue: Use Object.is(…) if available

[ExE-Boss]

Object.is(…) simply invokes the SameValue abstract operation.

[ljharb]

This changes SameValue.js from 23 bytes to 366 bytes, a 16x increase. I'm not sure this change is particularly useful here - this function is trivial for engines to inline, and falling back to the builtin one adds unreliability for what i suspect is no performance gain.

If there's actual benchmarks that indicate that the native Object.is method performs significantly faster than this version, then it'd be worth the bundle size increase, but otherwise I think this is probably fine as-is.

[codecov]

Codecov Report

Base: 95.10% // Head: 95.10% // No change to project coverage 👍

Coverage data is based on head (fc4581c) compared to base (235c1dc).
Patch has no changes to coverable lines.

❗ Current head fc4581c differs from pull request most recent head 8735417. Consider uploading reports for the commit 8735417 to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #103   +/-   ##
=======================================
  Coverage   95.10%   95.10%           
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  Files        1362     1362           
  Lines       18833    18833           
  Branches     4081     4081           
=======================================
  Hits        17911    17911           
  Misses        922      922           

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