chore: handle intentional d() calls in static analysis

[datamweb]

Description

Note: Using configuration file /home/runner/work/CodeIgniter4/CodeIgniter4/phpstan.neon.dist.
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Error: Call to function d() on a separate line has no effect.
Error: Call to function d() on a separate line has no effect.
 ------ -------------------------------------------------------- 
  Line   system/Commands/Utilities/ConfigCheck.php               
 ------ -------------------------------------------------------- 
  129    Call to function d() on a separate line has no effect.  
         🪪  function.resultUnused                               
 ------ -------------------------------------------------------- 

 ------ -------------------------------------------------------- 
  Line   tests/system/CommonFunctionsTest.php                    
 ------ -------------------------------------------------------- 
  741    Call to function d() on a separate line has no effect.  
         🪪  function.resultUnused                               
 ------ -------------------------------------------------------- 


 [ERROR] Found 2 errors                                                         

See :
https://github.com/codeigniter4/CodeIgniter4/actions/runs/27015062672/job/79727861345?pr=10278
Checklist:

• Securely signed commits
• Component(s) with PHPDoc blocks, only if necessary or adds value (without duplication)
• Unit testing, with >80% coverage
• User guide updated
• Conforms to style guide

[samsonasik]

Thank you @datamweb