ref!: remove root field resolver and improve performance

[vuongxuongminh]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 95.00000% with 4 lines in your changes are missing coverage. Please review.

Project coverage is 95.12%. Comparing base (69ec3e4) to head (d929388).

❗ Current head d929388 differs from pull request most recent head e60bc5b. Consider uploading reports for the commit e60bc5b to get more accurate results

Files	Patch %	Lines
src/Execution.php	95.00%	4 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main      #16      +/-   ##
============================================
+ Coverage     94.80%   95.12%   +0.31%     
+ Complexity       23       22       -1     
============================================
  Files             2        1       -1     
  Lines            77       82       +5     
============================================
+ Hits             73       78       +5     
  Misses            4        4              

Flag	Coverage Δ
phpunit	95.12% <95.00%> (+0.31%)	⬆️

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