fix: Email config in the .env doesn't appear as expected

Initialize typed properties.

Author: kenjis

app/Config/Email.php

@@ -6,9 +6,9 @@
 
 class Email extends BaseConfig
 {
-    public string $fromEmail;
-    public string $fromName;
-    public string $recipients;
+    public string $fromEmail  = '';
+    public string $fromName   = '';
+    public string $recipients = '';
 
     /**
      * The "user agent"
@@ -28,17 +28,17 @@ class Email extends BaseConfig
     /**
      * SMTP Server Address
      */
-    public string $SMTPHost;
+    public string $SMTPHost = '';
 
     /**
      * SMTP Username
      */
-    public string $SMTPUser;
+    public string $SMTPUser = '';
 
     /**
      * SMTP Password
      */
-    public string $SMTPPass;
+    public string $SMTPPass = '';
 
     /**
      * SMTP Port