Document array shape for ArrayResult::__unserialize()

[shakaran]

Q	A
Type	improvement

Summary

Related #7248

This small PR fixes only this 2 warnings in this file:

vendor/bin/phpstan analyse --level=9 src/Cache/ArrayResult.php
Note: Using configuration file /home/shakaran/Documentos/ProjectsSSD/dbal/phpstan.neon.dist.
 1/1 [▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓] 100%

 ------ ---------------------------------------------------------------------------------------------- 
  Line   ArrayResult.php                                                                               
 ------ ---------------------------------------------------------------------------------------------- 
  124    Property Doctrine\DBAL\Cache\ArrayResult::$columnNames (list<string>) does not accept mixed.  
         🪪  assign.propertyType                                                                       
         💡  mixed is not a list.                                                                      
  124    Property Doctrine\DBAL\Cache\ArrayResult::$rows (list<list<mixed>>) does not accept mixed.    
         🪪  assign.propertyType                                                                       
         💡  mixed is not a list.                                                                      
 ------ ---------------------------------------------------------------------------------------------- 

This pull request makes a minor improvement to the type annotation in the docblock for the $data parameter of the __unserialize method in src/Cache/ArrayResult.php, providing a more precise description of the expected array structure.

[derrabus]

Suggested change

	/** @param array{0: list<string>, 1: list<list<mixed>>} $data */
	/** @param array{list<string>, list<list<mixed>>} $data */

The keys are not necessary. Let's match the style we used in line 104.

[shakaran]

Fixed at 604bca2