refactor deleteNotification method

public/site/plugins/notifications/user-methods/delete.php

@@ -0,0 +1,26 @@
+<?php
+
+return function($project, $notificationId) {
+  $projectManagers = $project->managers()->toUsers();
+  
+  foreach ($projectManagers as $user) {
+    try {
+      $notifications = $user->notifications()->isNotEmpty() 
+          ? Yaml::decode($user->notifications()->value())
+          : [];          
+          
+      foreach ($notifications as $key => $notification) {
+        if ($notification['id'] === $notificationId) {
+          unset($notifications[$key]);
+        }
+      }
+
+      // Réindexation et ré-encodage en YAML avant la mise à jour
+      $user->update([
+        'notifications' => Yaml::encode(array_values($notifications))
+      ]);
+    } catch (\Throwable $th) {
+      throw new Exception("Error updating notifications: " . $th->getMessage() . ' line ' . $th->getLine(), 1);
+    }
+  }
+};