Make sure the template project name is helloworld_appmodules (#34417)

Summary:
Make sure the new app template uses the correct project CMake project name: `helloworld_appmodules`, otherwise the app will fail to load the dynamic library.

This was a copy-n-paste error from RNTester.

## Changelog

[Internal] - Make sure the template project name is `helloworld_appmodules`

Pull Request resolved: #34417

Test Plan: Will test an app created with the New App template

Reviewed By: cipolleschi

Differential Revision: D38698682

Pulled By: cortinico

fbshipit-source-id: b09331a52989b3b131ea8ba627057febcb535ef8

template/android/app/src/main/jni/CMakeLists.txt

@@ -1,7 +1,7 @@
 cmake_minimum_required(VERSION 3.13)
 
 # Define the library name here.
-project(rntester_appmodules)
+project(helloworld_appmodules)
 
 # This file includes all the necessary to let you build your application with the New Architecture.
 include(${REACT_ANDROID_DIR}/cmake-utils/ReactNative-application.cmake)