DevSupportHttpClient uses OkHttpClientProvider (facebook#55886)

Summary:
Pull Request resolved: facebook#55886

Instead of creating an independent OkHttpClient, derive from
OkHttpClientProvider.getOkHttpClient() so that all dev support
connections share the same connection pool and dispatcher with
the rest of React Native networking.

Changelog: [Internal]

Reviewed By: cipolleschi

Differential Revision: D95058926

Author: cortinico

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/devsupport/inspector/DevSupportHttpClient.kt

@@ -9,6 +9,7 @@
 
 package com.facebook.react.devsupport.inspector
 
+import com.facebook.react.modules.network.OkHttpClientProvider
 import java.util.concurrent.TimeUnit
 import okhttp3.OkHttpClient
 
@@ -19,7 +20,8 @@ import okhttp3.OkHttpClient
 internal object DevSupportHttpClient {
   /** Client for HTTP requests: connect=5s, write=disabled, read=disabled. */
   internal val httpClient: OkHttpClient =
-      OkHttpClient.Builder()
+      OkHttpClientProvider.getOkHttpClient()
+          .newBuilder()
           .connectTimeout(5, TimeUnit.SECONDS)
           .writeTimeout(0, TimeUnit.MILLISECONDS)
           .readTimeout(0, TimeUnit.MINUTES)