[WIP] feature: fireEvent default event object

[mdjastrzebski]

Summary

Resolves #714

Test plan

TODO

[codecov]

Codecov Report

Base: 94.94% // Head: 94.87% // Decreases project coverage by -0.07% ⚠️

Coverage data is based on head (eed9309) compared to base (ecb4b95).
Patch coverage: 93.25% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1258      +/-   ##
==========================================
- Coverage   94.94%   94.87%   -0.08%     
==========================================
  Files          45       46       +1     
  Lines        3088     3159      +71     
  Branches      457      466       +9     
==========================================
+ Hits         2932     2997      +65     
- Misses        156      162       +6     

Impacted Files	Coverage Δ
src/fireEvent.ts	95.67% <88.88%> (-2.99%)	⬇️
src/helpers/create-event.ts	100.00% <100.00%> (ø)

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[mdjastrzebski]

Closing as stale. Subject will be addressed in UserEvent PR (#1405, #1386 #1396), and can be back-ported to fireEvent if needed.