Exclude react-native-flipper when NO_FLIPPER=1 to prevent iOS build fail (facebook#35686)

Summary:
- Flipper issue: facebook/flipper#3995 (comment)

iOS build fail with an error:

```sh
node_modules/react-native-flipper/ios/FlipperReactNativeJavaScriptPlugin.h:9:9: 'FlipperKit/FlipperConnection.h' file not found

#import <FlipperKit/FlipperConnection.h>
```

## Changelog

[IOS] [FIXED] - Exclude `react-native-flipper` when `NO_FLIPPER=1` to prevent iOS build fail

Pull Request resolved: facebook#35686

Test Plan:
```sh
npx react-native init RN0710RC5 --version 0.71.0-rc.5
cd RN0710RC5
yarn add react-native-flipper
NO_FLIPPER=1 pod install --project-directory=ios
yarn ios # will fail
```

Reviewed By: rshest

Differential Revision: D42368444

Pulled By: cipolleschi

fbshipit-source-id: a8614ccadb98970ebae15d8743136fa60ead318c

Author: retyui

template/ios/Podfile

@@ -4,6 +4,15 @@ require_relative '../node_modules/@react-native-community/cli-platform-ios/nativ
 platform :ios, min_ios_version_supported
 prepare_react_native_project!
 
+# If you are using a `react-native-flipper` your iOS build will fail when `NO_FLIPPER=1` is set.
+# because `react-native-flipper` depends on (FlipperKit,...) that will be excluded
+#
+# To fix this you can also exclude `react-native-flipper` using a `react-native.config.js`
+# ```js
+# module.exports = {
+#   dependencies: {
+#     ...(process.env.NO_FLIPPER ? { 'react-native-flipper': { platforms: { ios: null } } } : {}),
+# ```
 flipper_config = ENV['NO_FLIPPER'] == "1" ? FlipperConfiguration.disabled : FlipperConfiguration.enabled
 
 linkage = ENV['USE_FRAMEWORKS']