feat: bump up fabric example react-native iOS (#3951)

* feat: 🔥 version bump react native for ios FabricExample
* feat: ✨ copied newly created basic example TS files

examples/FabricExample/ios/Podfile

@@ -1,28 +1,25 @@
 ENV['RCT_NEW_ARCH_ENABLED'] = "1"
-require_relative '../node_modules/react-native/scripts/react_native_pods'
-require_relative '../node_modules/@react-native-community/cli-platform-ios/native_modules'
 
-platform :ios, '12.4'
+# Resolve react_native_pods.rb with node to allow for hoisting
+require Pod::Executable.execute_command('node', ['-p',
+  'require.resolve(
+    "react-native/scripts/react_native_pods.rb",
+    {paths: [process.argv[1]]},
+  )', __dir__]).strip
+
+platform :ios, '13.4'
 install! 'cocoapods', :deterministic_uuids => false
 
 target 'FabricExample' do
   config = use_native_modules!
 
-  # Flags change depending on the env values.
-  flags = get_default_flags()
-
   use_react_native!(
     :path => config[:reactNativePath],
-    # Hermes is now enabled by default. Disable by setting this flag to false.
-    # Upcoming versions of React Native may rely on get_default_flags(), but
-    # we make it explicit here to aid in the React Native upgrade process.
-    :hermes_enabled => true,
-    :fabric_enabled => flags[:fabric_enabled],
     # Enables Flipper.
     #
     # Note that if you have use_frameworks! enabled, Flipper will not work and
     # you should disable the next line.
-    :flipper_configuration => FlipperConfiguration.enabled,
+    # :flipper_configuration => FlipperConfiguration.enabled,
     # An absolute path to your application root.
     :app_path => "#{Pod::Config.instance.installation_root}/.."
   )
@@ -35,10 +32,8 @@ target 'FabricExample' do
   post_install do |installer|
     react_native_post_install(
       installer,
-      # Set `mac_catalyst_enabled` to `true` in order to apply patches
-      # necessary for Mac Catalyst builds
+      config[:reactNativePath],
       :mac_catalyst_enabled => false
     )
-    __apply_Xcode_12_5_M1_post_install_workaround(installer)
   end
 end