fix: fix android init error (#225)

아래는 참고 사항입니다. 

```
@ReactMethod
fun initialize(
    consumerKey: String,
    consumerSecret: String,
    appName: String,
): Unit {  // 명시적 Unit 반환
// 현재 함수형으로 변경해서 추론가능하게 변경
    UiThreadUtil.runOnUiThread {
        NaverIdLoginSDK.initialize(...)
    }
}
```
@ReactMethod
fun initialize(
    consumerKey: String,
    consumerSecret: String,
    appName: String,
    promise: Promise
) {
    UiThreadUtil.runOnUiThread {
        try {
            NaverIdLoginSDK.initialize(...)
            promise.resolve(true)
        } catch (e: Exception) {
            promise.reject("ERROR", e.message)
        }
    }
}
```

```

Author: jeongshin

android/src/main/java/com/dooboolab/naverlogin/RNNaverLoginModule.kt

@@ -37,13 +37,15 @@ class RNNaverLoginModule(reactContext: ReactApplicationContext) : ReactContextBa
         consumerKey: String,
         consumerSecret: String,
         appName: String,
-    ) = UiThreadUtil.runOnUiThread {
-        NaverIdLoginSDK.initialize(
-            reactApplicationContext,
-            clientId = consumerKey,
-            clientSecret = consumerSecret,
-            clientName = appName,
-        )
+    ) {
+        UiThreadUtil.runOnUiThread {
+            NaverIdLoginSDK.initialize(
+                reactApplicationContext,
+                clientId = consumerKey,
+                clientSecret = consumerSecret,
+                clientName = appName,
+            )
+        }
     }
 
     @ReactMethod