Let the app provide expo-file-system in the React Native SDK #2098

Tracks PR #2097.

Plan

Goal: Make one build of the React Native SDK (react-native-appwrite) work on Expo SDK 52 through 58 by letting the app provide expo-file-system, fixing the Android launch crash on Expo 54+ (sdk-for-react-native#114) and failed uploads on Expo 55+ (sdk-for-react-native#112).

What changes (PR #2097):

• templates/react-native/package.json.twig and package-lock.json.twig: expo-file-system moves from dependencies (18.*.*) to peerDependencies (>=18.0.0), with a 58.0.9 devDependency for types; the expo peer goes from * to >=52.0.0.
• New templates/react-native/src/lib/file-system.ts.twig (registered in src/SDK/Language/ReactNative.php): requires expo-file-system/legacy and falls back to the root expo-file-system for 18.x.
• templates/react-native/src/services/template.ts.twig: uploads use the loader, and Android chunk temp files are deleted after each request.
• templates/react-native/tsconfig.json.twig: moduleResolution set to bundler so the /legacy types resolve.
• templates/react-native/README.md.twig: install command includes expo-file-system; states Expo SDK 52+ support.
• Tests: tests/generation/GenerationTest.php peer-dependency check, and the React Native e2e harness (tests/e2e/ReactNativeTest.php, tests/e2e/languages/react-native/shims/*) covering the 19+ and 18 layouts plus temp chunk cleanup.

Remaining steps:

1. Get PR fix(react-native): let the app provide expo-file-system #2097 reviewed and merged.
2. Release the React Native SDK as a minor (2.1.0, per the PR description).
3. Follow up on sdk-for-react-native#112 and Added automated deployment to NPM #114 once the release is out.

Done when:

• PR fix(react-native): let the app provide expo-file-system #2097 is merged
• React Native SDK 2.1.0 is released with the peer dependency change
• sdk-for-react-native#112 and Added automated deployment to NPM #114 are resolved