Fix StringFormatTrivial: Replace String.format with string templates in WebSocketModule (#56114)

Summary:
Pull Request resolved: #56114

Fixed StringFormatTrivial lint warnings in WebSocketModule.kt.

Replaced trivial String.format calls with Kotlin string templates for better performance. String.format creates a new Formatter instance on each call, while string templates are compiled to simple concatenation.

changelog: [internal] internal

Reviewed By: alanleedev

Differential Revision: D96784739

fbshipit-source-id: a6636e9448a3611a9952eb57fff71e4ad174f8c3

Author: mdvacca

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/modules/websocket/WebSocketModule.kt

@@ -395,9 +395,9 @@ public class WebSocketModule(context: ReactApplicationContext) :
 
         val defaultOrigin =
             if (requestURI.port != -1) {
-              String.format("%s://%s:%s", scheme, requestURI.host, requestURI.port)
+              "$scheme://${requestURI.host}:${requestURI.port}"
             } else {
-              String.format("%s://%s", scheme, requestURI.host)
+              "$scheme://${requestURI.host}"
             }
 
         return defaultOrigin