Move cocoapods cli native_modules require from template to rn scripts

This resolves issues where the node_modules structure is not hoisted (like with pnpm). Since the template does not directly depend on the cli, it doesn't exist in the pnpm node_modules root. Moving it to the rn scripts makes sure that the relative require starts in the correct directory for both hoisted and pnpm structures.

scripts/native_modules.rb

@@ -0,0 +1,6 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
+require_relative '../../@react-native-community/cli-platform-ios/native_modules'

template/ios/Podfile

@@ -1,5 +1,5 @@
 require_relative '../node_modules/react-native/scripts/react_native_pods'
-require_relative '../node_modules/@react-native-community/cli-platform-ios/native_modules'
+require_relative '../node_modules/react-native/scripts/native_modules'
 
 platform :ios, '12.4'
 install! 'cocoapods', :deterministic_uuids => false