chore(deps): upgrade to React Native 0.85.3 / Expo SDK 56

[blazejkustra]

Rename react-native-wgpu -> react-native-webgpu (the canonical package; the old name is now just a shim) across deps, peer deps, source imports and docs.

Dependencies:

• React Native 0.83.1 -> 0.85.3, React 19.2.3, Expo SDK 55 -> 56
• Align native modules to the Expo SDK 56 tested set (reanimated 4.3.1, worklets 0.8.3, gesture-handler 2.31.1, screens 4.25.2, safe-area 5.7.0)
• Update JS tooling: prettier 3, typescript 6, builder-bob 0.41, navigation, commitlint, release-it, turbo, del-cli, lefthook (eslint/jest kept at the latest versions compatible with RN 0.85's own presets)

RN 0.85 migrations:

• StyleSheet.absoluteFillObject -> absoluteFill (removed from the strict API)
• jest preset react-native -> @react-native/jest-preset
• regenerate the worklets bundle-mode metro patches for metro 0.84.4

Build fixes:

• Expo 56 Metro transformer crash: drop the redundant babel override in the example (top-level worklets plugin already covers ../src), which broke @expo/metro-config's filename-less cache-key load
• Android: react-native-webgpu needs minSdkVersion 26 (AHardwareBuffer APIs); set it via expo-build-properties and document the requirement in the README