feat: w3c events alignment

[mdjastrzebski]

Summary

Test plan

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.92%. Comparing base (39615fa) to head (7475adb).

Additional details and impacted files

@@                  Coverage Diff                  @@
##           next/event-system    #1954      +/-   ##
=====================================================
- Coverage              98.94%   98.92%   -0.03%     
=====================================================
  Files                    103      105       +2     
  Lines                   2281     2318      +37     
  Branches                 606      618      +12     
=====================================================
+ Hits                    2257     2293      +36     
- Misses                    23       24       +1     
  Partials                   1        1              

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