Remove legacy ShortMessage components and integrate Notifier

Replaced outdated ShortMessage functionalities with Symfony's Notifier component for handling SMS messages. Deprecated legacy `ShortMessage` components and introduced a transition layer for existing OVH configurations. Updated dependencies and environment setup to support the new implementation.

symfony.lock

@@ -308,6 +308,15 @@
             "config/packages/notifier.yaml"
         ]
     },
+    "symfony/ovh-cloud-notifier": {
+        "version": "5.4",
+        "recipe": {
+            "repo": "github.com/symfony/recipes",
+            "branch": "main",
+            "version": "5.1",
+            "ref": "fe2e382c22d60eae9ad54cb22862b1c15291fdf8"
+        }
+    },
     "symfony/phpunit-bridge": {
         "version": "7.1",
         "recipe": {