PHP 8.3 Compatibility

Adding a patch for this issue while the MR is still open.

There's a similar issue in src/Form/NotifyExtendForm.php. The attached patch fixes that, too.

Drupal version: 10.3.13
Php version: 8.3.14
Module version: 3.0.2
I have reviewed and tested the patch → , and it correctly addresses PHP 8.3 compatibility issues by explicitly declaring the $config property in both ContentNotifyManager and NotifyExtendForm. This prevents runtime errors due to undefined properties and ensures compliance with stricter initialization rules in PHP 8.3. The changes are also align with Drupal’s coding standards. The patch is working as expected, and I am moving the issue status to RTBC