Remove redundant import and improve Rector setup

Removed the unused `PhpUnitTestClassRequiresCoversFixer` import from `ecs.php`. Enhanced the Rector configuration in `rector.php` by adding Symfony sets for code quality, constructor injection, and validator attributes, while keeping imports organized and removing unused imports.

ecs.php

@@ -19,7 +19,6 @@
 use PhpCsFixer\Fixer\PhpTag\LinebreakAfterOpeningTagFixer;
 use PhpCsFixer\Fixer\PhpUnit\PhpUnitTestAnnotationFixer;
 use PhpCsFixer\Fixer\PhpUnit\PhpUnitTestCaseStaticMethodCallsFixer;
-use PhpCsFixer\Fixer\PhpUnit\PhpUnitTestClassRequiresCoversFixer;
 use PhpCsFixer\Fixer\ReturnNotation\SimplifiedNullReturnFixer;
 use PhpCsFixer\Fixer\Strict\DeclareStrictTypesFixer;
 use PhpCsFixer\Fixer\Strict\StrictComparisonFixer;
@@ -31,6 +30,7 @@
 $header = '';
 
 return static function (ECSConfig $config) use ($header): void {
+    $header = '';
     $config->import(SetList::PSR_12);
     $config->import(SetList::CLEAN_CODE);
     $config->import(SetList::DOCTRINE_ANNOTATIONS);

rector.php

@@ -13,19 +13,26 @@
 return static function (RectorConfig $config): void {
     $config->import(SetList::DEAD_CODE);
     $config->import(LevelSetList::UP_TO_PHP_82);
+    $config->import(SymfonySetList::SYMFONY_64);
+    $config->import(SymfonySetList::SYMFONY_50_TYPES);
+    $config->import(SymfonySetList::SYMFONY_52_VALIDATOR_ATTRIBUTES);
     $config->import(SymfonySetList::SYMFONY_CODE_QUALITY);
-    $config->import(PHPUnitSetList::PHPUNIT_110);
+    $config->import(SymfonySetList::SYMFONY_CONSTRUCTOR_INJECTION);
+    $config->import(SymfonySetList::ANNOTATIONS_TO_ATTRIBUTES);
     $config->import(PHPUnitSetList::PHPUNIT_CODE_QUALITY);
+    $config->import(PHPUnitSetList::ANNOTATIONS_TO_ATTRIBUTES);
+    $config->import(PHPUnitSetList::PHPUNIT_110);
     $config->parallel();
     $config->paths([__DIR__ . '/src', __DIR__ . '/tests']);
     $config->skip(
         [
-            __DIR__ . '/src/IndefiniteLengthMapObject.php',
             __DIR__ . '/src/MapObject.php',
             PreferPHPUnitThisCallRector::class,
         ]
     );
     $config->phpVersion(PhpVersion::PHP_82);
+    $config->parallel();
     $config->importNames();
     $config->importShortClasses();
+    $config->removeUnusedImports();
 };