Notification Providers Testing with Notification Rules

[ralphte]

Notification providers (such as Email, Slack, Discord, and Telegram) need testing alongside the new notification rules. This issue ensures that all notification channels correctly process and display notifications based on the specified rules.

Tasks:
• Create test cases for each notification provider.
• Verify that new notification rules are correctly applied and triggered.
• Ensure the front end displays notification options and rule statuses accurately.
• Update user documentation to cover any changes in notification rule management.