chore(template): dynamically resolve node modules root (#2757)

Followup from
#2756 (comment)

Author: Saadnajmi

packages/react-native/local-cli/generator-macos/templates/macos/Podfile

@@ -1,10 +1,15 @@
-require_relative '../node_modules/react-native-macos/scripts/react_native_pods'
-require_relative '../node_modules/@react-native-community/cli-platform-ios/native_modules'
+require 'pathname'
+
+ws_dir = Pathname.new(__dir__)
+ws_dir = ws_dir.parent until
+  File.exist?("#{ws_dir}/node_modules/react-native-macos/scripts/react_native_pods.rb") ||
+  ws_dir.expand_path.to_s == '/'
+require "#{ws_dir}/node_modules/react-native-macos/scripts/react_native_pods.rb"
 
 prepare_react_native_project!
 
 target 'HelloWorld-macOS' do
-  platform :macos, '11.0'
+  platform :macos, '14.0'
   use_native_modules!
 
   # Flags change depending on the env values.