allow HTTP in debug builds (facebook#24066)

Summary:
It allows HTTP connections in debug builds, and requires no configuration compared to previous/current solution where you need to edit config file to test on device.

Consulted with Salakar about this.

[Android] [Changed] - Allow HTTP in debug builds
Pull Request resolved: facebook#24066

Differential Revision: D14540255

Pulled By: cpojer

fbshipit-source-id: f1239154c27c36c21c9b080a826f8b1d0eb0fc7d

Author: dulmandakh

template/android/app/src/debug/AndroidManifest.xml

@@ -4,5 +4,5 @@
 
     <uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW"/>
 
-    <application tools:targetApi="28" tools:ignore="GoogleAppIndexingWarning" android:networkSecurityConfig="@xml/react_native_config" />
-</manifest>
+    <application android:usesCleartextTraffic="true" tools:targetApi="28" tools:ignore="GoogleAppIndexingWarning" />
+</manifest>