feat: Add mail test functionality

Adds a dialog to test email settings and integrates with the `/api/settings/test/email` API endpoint.
- Added a "Test Email" button to the Mail Settings tab.
- Implemented a dialog for entering the recipient email and selecting a template.
- Added UI elements for the dialog (input fields, radio buttons, and a send button).
- Updated `src/services/settingsService.ts` to include the test email API call.
- Added UI components for the dialog (using existing UI components).
- Updated `src/components/settings/general/MailSettingsTab.tsx` to include the test email functionality.

application/src/services/notification/signalService.ts

@@ -88,4 +88,4 @@ export async function sendSignalNotification(
     });
     return false;
   }
-}
+}

application/src/services/notification/telegramService.ts

@@ -20,9 +20,9 @@ export async function sendTelegramNotification(
       enabled: config.enabled
     }, null, 2));
     
-    // Use provided credentials if available, otherwise use config
-    const chatId = config.telegram_chat_id || "-10345353455465";
-    const botToken = config.bot_token || "7581526325:AAFZgmn9hz436ret3453454";
+    // Use provided credentials
+    const chatId = config.telegram_chat_id;
+    const botToken = config.bot_token;
     
     if (!chatId || !botToken) {
       console.error("Missing Telegram configuration - Chat ID:", chatId, "Bot token present:", !!botToken);
@@ -106,30 +106,4 @@ export async function sendTelegramNotification(
     });
     return false;
   }
-}
-
-/**
- * Test function to send a direct Telegram message 
- * without requiring configuration from the database
- */
-export async function testSendTelegramMessage(
-  chatId: string = "-10345353455465",
-  botToken: string = "7581526325:AAFZgmn9hz436ret3453454",
-  message: string = "This is a test message from the monitoring system"
-): Promise<boolean> {
-  console.log("====== DIRECT TELEGRAM TEST ======");
-  console.log(`Testing Telegram notification with chat ID: ${chatId}`);
-  
-  // Create a minimal config with just the required fields
-  const testConfig: AlertConfiguration = {
-    service_id: "test",
-    notification_type: "telegram",
-    telegram_chat_id: chatId,
-    bot_token: botToken,
-    notify_name: "Test Direct Notification",
-    enabled: true
-  };
-  
-  console.log("Sending test message with content:", message);
-  return await sendTelegramNotification(testConfig, message);
-}
+}