v6.4.0-BETA1

Changelog (v6.3.6...v6.4.0-BETA1)

• feature symfony/symfony#52079 [HttpKernel] Add parameters kernel.runtime_mode and kernel.runtime_mode.*, all set from env var APP_RUNTIME_MODE (@nicolas-grekas)
• feature symfony/symfony#52032 [FrameworkBundle][Routing][Translation][Workflow] Move some compiler passes from FrameworkBundle to components (@fancyweb)
• feature symfony/symfony#52140 [Translation] Add argument $buildDir to DataCollectorTranslator::warmUp() (@nicolas-grekas)
• feature symfony/symfony#50391 [FrameworkBundle][HttpKernel] Introduce $buildDir argument to WarmableInterface::warmup to warm read-only artefacts in build_dir (@Okhoshi)
• feature symfony/symfony#51153 [Translation] Add --as-tree option to translation:pull command (@syffer)
• feature symfony/symfony#51684 [Translation] Give current locale to LocaleSwitcher::runWithLocale()'s callback (@alexander-schranz)
• feature symfony/symfony#49231 [Translation] Phrase translation provider (@wickedOne)
• feature symfony/symfony#50842 Add missing return types to magic methods (@wouterj)