Reproducer memory leak

Test

composer install
php bin/console --env=test doctrine:database:create
php bin/console --env=test doctrine:schema:create

Update composer.json with "symfony/framework-bundle": "5.4.5", / "symfony/framework-bundle": "5.4.6", to switch between SF versions.

On SF 5.4.5 :

Time: 00:01.822, Memory: 54.50 MB

OK (100 tests, 700 assertions)

On SF 5.4.6 :

Time: 00:01.729, Memory: 98.50 MB

OK (100 tests, 700 assertions)