fix: event polyfill detection compatibility with react-native-web

[awinograd]

Description

Fixes #7259

Specific Changes proposed

update event polyfill detection logic to be compatible with react-native-web.

Requirements Checklist

• Feature implemented / Bug fixed
• If necessary, more likely in a feature request than a bug fix
  • Change has been verified in an actual browser (Chrome, Firefox, IE)
  • Unit Tests updated or fixed
  • Docs/guides updated
  • Example created (starter template on JSBin)
• Reviewed by Two Core Contributors

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[codecov]

Codecov Report

Merging #7286 (369c0db) into main (4cecbda) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main    #7286   +/-   ##
=======================================
  Coverage   79.44%   79.44%           
=======================================
  Files         115      115           
  Lines        7264     7264           
  Branches     1745     1745           
=======================================
  Hits         5771     5771           
  Misses       1493     1493           

Impacted Files	Coverage Δ
src/js/utils/events.js	80.40% <100.00%> (ø)

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[welcome]

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