Fix Twig deprecation in ExtendsAdmingeneratedTokenParser

Fix one more nullable typing causing a deprecation in PHP 8.4

Fix nullable typing causing a deprecation in PHP 8.4

Remove deprecated call to internal Parser::getParent(), check is alre…

…ady done when calling Parser::setParent(). Return EmptyNode like Twig ExtendsTokenParser does.

Remove deprecated spaceless filter applications

Fix compatibility with ORM 3

Fix GeneratorCacheWarmer with Symfony 7 (#346)

* Fix GeneratorCacheWarmer with Symfony 7

* Update CacheWarmer/GeneratorCacheWarmer.php

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Co-authored-by: Bob van de Vijver <bobvandevijver@users.noreply.github.com>

Allow Symfony 7

Apply Query builder closure build to all form types

Fix list for Date(Time) immutable DB types