N°6934 - Symfony 6.4 - upgrade Symfony bundles to 6.4 (#580)

* Update Symfony lib to version ~6.4.0
* Update code missing return type
* Add an iTop general configuration entry to store application secret (Symfony mandatory parameter)
* Use dependency injection in ExceptionListener & UserProvider classes

lib/symfony/console/Descriptor/ApplicationDescription.php

@@ -24,24 +24,20 @@ class ApplicationDescription
 {
     public const GLOBAL_NAMESPACE = '_global';
 
-    private $application;
-    private $namespace;
-    private $showHidden;
-
-    /**
-     * @var array
-     */
-    private $namespaces;
+    private Application $application;
+    private ?string $namespace;
+    private bool $showHidden;
+    private array $namespaces;
 
     /**
      * @var array<string, Command>
      */
-    private $commands;
+    private array $commands;
 
     /**
      * @var array<string, Command>
      */
-    private $aliases;
+    private array $aliases = [];
 
     public function __construct(Application $application, string $namespace = null, bool $showHidden = false)
     {
@@ -52,7 +48,7 @@ class ApplicationDescription
 
     public function getNamespaces(): array
     {
-        if (null === $this->namespaces) {
+        if (!isset($this->namespaces)) {
             $this->inspectApplication();
         }
 
@@ -64,7 +60,7 @@ class ApplicationDescription
      */
     public function getCommands(): array
     {
-        if (null === $this->commands) {
+        if (!isset($this->commands)) {
             $this->inspectApplication();
         }
 
@@ -83,7 +79,7 @@ class ApplicationDescription
         return $this->commands[$name] ?? $this->aliases[$name];
     }
 
-    private function inspectApplication()
+    private function inspectApplication(): void
     {
         $this->commands = [];
         $this->namespaces = [];