Fixed a build error by using @react-native/gradle-plugin

Fixed a build error by using @react-native/gradle-plugin

Author: rob-gioia-branch

branchreactnativetestbed/android/settings.gradle

@@ -1,4 +1,4 @@
 rootProject.name = 'branchreactnativetestbed'
 apply from: file("../node_modules/@react-native-community/cli-platform-android/native_modules.gradle"); applyNativeModulesSettingsGradle(settings)
 include ':app'
-includeBuild('../node_modules/react-native-gradle-plugin')
+includeBuild('../node_modules/@react-native/gradle-plugin')