minor #15742 [Console] Document lazy command via description (noniagriconomie)

This PR was merged into the 5.3 branch.

Discussion
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[Console] Document lazy command via description

Hi,

PR to close #14860
and close #14862

Is it also relevant to update https://github.com/symfony/demo/blob/main/src/Command/*Command.php? I can PR if needed

Commits
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a79e692 [Console] Document lazy command via description

Author: javiereguiluz

console.rst

@@ -79,19 +79,28 @@ Configuring the Command
 You can optionally define a description, help message and the
 :doc:`input options and arguments </console/input>`::
 
+    // ...
+    // the short description shown while running "php bin/console list"
+    protected static $defaultDescription = 'Creates a new user.';
+
     // ...
     protected function configure(): void
     {
         $this
-            // the short description shown while running "php bin/console list"
-            ->setDescription('Creates a new user.')
+            ->setDescription(self::$defaultDescription)
 
             // the full command description shown when running the command with
             // the "--help" option
             ->setHelp('This command allows you to create a user...')
         ;
     }
 
+.. versionadded:: 5.3
+
+    The ``$defaultDescription`` static property was introduced in Symfony 5.3.
+    It allows to make the ``php bin/console list`` lazy.
+    You can as well use ``php bin/console list --short`` option to have the output faster.
+
 The ``configure()`` method is called automatically at the end of the command
 constructor. If your command defines its own constructor, set the properties
 first and then call to the parent constructor, to make those properties