Changelog (https://github.com/symfony/symfony/compare/v6.4.0-BETA1...v6.4.0-BETA2)

• bug #52329 [HttpClient] Psr18Client: parse HTTP Reason Phrase for Response (@Hanmac)
• bug #52323 [AssetMapper] Allowing circular references in JavaScriptImportPathCompiler (@weaverryan)
• bug #52331 [AssetMapper] Fix file deleting errors & remove nullable MappedAsset on JS import (@weaverryan)
• bug #52332 [Yaml] Fix deprecated passing null to trim() (@javaDeveloperKid)
• bug #52349 [AssetMapper] Fix in-file imports to resolve via filesystem (@weaverryan)
• bug #52343 [Intl] Update the ICU data to 74.1 (@jderusse)
• bug #52347 [Form] Fix merging form data and files (ter) (Jan Pintr)
• bug #52330 [AssetMapper] Fixing memory bug where we stored way more file content than needed (@weaverryan)
• bug #52325 [AssetMapper] jsdelivr "no version" import syntax (@weaverryan)
• bug #52307 [Scheduler] Save checkpoint in a finally block (@FrancoisPog)
• feature #52193 [PhpUnitBridge] Allow setting the locale using SYMFONY_PHPUNIT_LOCALE env var (@VincentLanglet)
• bug #52290 [DebugBundle] ignore a not-existing virtual request stack (@xabbuh)
• bug #52308 [SecurityBundle] Fix missing login-link element in xsd schema (@fancyweb)
• bug #51331 [Messenger] add handler description as array key to HandlerFailedException::getWrappedExceptions() (@kbond)
• bug #51992 [Serializer] Fix using DateIntervalNormalizer with union types (@Jeroeny)
• bug #52276 DB table locks on messenger_messages with many failures (@bn-jdcook)
• bug #52232 [Messenger] declare constructor argument as optional for backwards compatibility (@xabbuh)
• bug #52254 [AssetMapper] Adding import-parsing case where import contains a path (@weaverryan)
• bug #52283 [Serializer] Handle default context when denormalizing timestamps in DateTimeNormalizer (@mtarld)
• bug #52272 [VarDump] Fix order of dumped properties - parent goes first (@lyrixx)
• bug #52274 [FrameworkBundle] re-introduce conflict rule with WebProfilerBundle < 6.4 (@xabbuh)
• bug #52268 [Mailer][Notifier] Update Sendinblue / Brevo API host (@Stephanie)
• bug #52255 [Form] Skip merging params & files if there are no files in the first place (@dmaicher, @priyadi)
• bug #52234  add return type hints to EntityFactory (@xabbuh)
• bug #52229 [FrameworkBundle] Fix CommandDataCollector is always registered (@smnandre)
• bug #52218 [FrameworkBundle] Add conflict with WebProfilerBundle < 6.4 (@HeahDude)

[PR] https://github.com/symfony/symfony/pull/52358