none: reverting change to build.gradle

Author: kilian-tennyson

example/android/app/build.gradle

@@ -42,7 +42,7 @@ react {
   // bundleAssetName = "MyApplication.android.bundle"
   //
   //   The entry file for bundle generation. Default is 'index.android.js' or 'index.js'
-  entryFile = file("../../../src/index.tsx")
+  entryFile = file("../../index.tsx")
   //
   //   A list of extra flags to pass to the 'bundle' commands.
   //   See https://github.com/react-native-community/cli/blob/main/docs/commands.md#bundle