Merge branch '4.4' into 5.0

* 4.4: (30 commits)
  [Security] Check UserInterface::getPassword is not null before calling needsRehash
  gracefully handle missing event dispatchers
  Fix TokenStorage::reset not called in stateless firewall
  [DotEnv] Remove `usePutEnv` property default value
  [HttpFoundation] get currently session.gc_maxlifetime if ttl doesnt exists
  Set up typo fix
  [DependencyInjection] Handle env var placeholders in CheckTypeDeclarationsPass
  [Cache] fix memory leak when using PhpArrayAdapter
  [Validator] Allow underscore character "_" in URL username and password
  [TwigBridge] Update bootstrap_4_layout.html.twig
  [FrameworkBundle][SodiumVault] Create secrets directory only when needed
  fix parsing negative octal numbers
  [SecurityBundle] Passwords are not encoded when algorithm set to \"true\"
  [DependencyInjection] Resolve expressions in CheckTypeDeclarationsPass
  [SecurityBundle] Properly escape regex in AddSessionDomainConstraintPass
  do not validate passwords when the hash is null
  [DI] fix resolving bindings for named TypedReference
  [Config] never try loading failed classes twice with ClassExistenceResource
  [Mailer] Fix SMTP Authentication when using STARTTLS
  [DI] Fix making the container path-independent when the app is in /app
  ...

Author: nicolas-grekas

Transport/Smtp/EsmtpTransport.php

@@ -115,6 +115,7 @@ protected function doHeloCommand(): void
 
             try {
                 $response = $this->executeCommand(sprintf("EHLO %s\r\n", $this->getLocalDomain()), [250]);
+                $capabilities = $this->getCapabilities($response);
             } catch (TransportExceptionInterface $e) {
                 parent::doHeloCommand();