refactor(admin/event): optimize notification target routing and logic handling (#463)

* add

* fix

* add target arns list

* improve code for arns

* upgrade crates version

* fix

* improve import code mod.rs

* fix

* improve

* improve code

* improve code

* fix

* fmt

crates/config/src/notify/mqtt.rs

@@ -27,7 +27,7 @@ pub const MQTT_QUEUE_LIMIT: &str = "queue_limit";
 
 /// A list of all valid configuration keys for an MQTT target.
 pub const NOTIFY_MQTT_KEYS: &[&str] = &[
-    ENABLE_KEY, // "enable" is a common key
+    ENABLE_KEY,
     MQTT_BROKER,
     MQTT_TOPIC,
     MQTT_QOS,

crates/config/src/notify/webhook.rs

@@ -24,7 +24,7 @@ pub const WEBHOOK_CLIENT_KEY: &str = "client_key";
 
 /// A list of all valid configuration keys for a webhook target.
 pub const NOTIFY_WEBHOOK_KEYS: &[&str] = &[
-    ENABLE_KEY, // "enable" is a common key
+    ENABLE_KEY,
     WEBHOOK_ENDPOINT,
     WEBHOOK_AUTH_TOKEN,
     WEBHOOK_QUEUE_LIMIT,