fix(types): support React Native 0.87 Strict TypeScript API

[jslok]

RN 0.87 makes the Strict TypeScript API the default. Two type-level assumptions in this package break under it, and because package.json exposes src/index.tsx through the react-native export condition, consuming apps see the errors in their own tsc run:

node_modules/react-native-view-shot/src/specs/NativeRNViewShot.ts(3,34): error TS2307:
  Cannot find module 'react-native/Libraries/Types/CodegenTypes'
node_modules/react-native-view-shot/src/index.tsx(352,31): error TS2345:
  Argument of type '(props: ...) => ReactNode' is not assignable to parameter of type 'CaptureTarget'
node_modules/react-native-view-shot/src/index.tsx(439,9): error TS2322:
  Type '(node: View | null) => void' is not assignable to type 'Ref<ReactNativeElement>'

1. CodegenTypes deep import. RN's exports map now sets "./Libraries/*": { "types": null } unless the consumer opts into the react-native-legacy-deep-imports condition, so the deep import has no types. RN re-exports the same declarations as a CodegenTypes namespace from the package root. CodegenTypes.WithDefault<number, -1> resolves to exactly the same type as before (number | null | undefined), so the generated native signature is unchanged.

2. View as a ref instance type. Under the strict typings View is a function component rather than a class, so it no longer describes an instance. React.ComponentRef<typeof View> extracts the instance type and resolves correctly under both the legacy and the strict typings, so this is not an RN-version-gated change.

Compatibility note

The CodegenTypes namespace export landed in RN 0.80 (types_generated/Libraries/Types/CodegenTypesNamespace.d.ts); the current peer range is >=0.76.0. In practice the TurboModule spec only matters on the New Architecture, and v5's stack targets 0.81+, so I don't think anyone is affected — but if you'd rather not move the floor at all, the alternative is inlining target: number | null | undefined and dropping the import entirely. Happy to switch if you prefer that.

Verification

tsc --noEmit is clean against react-native@0.87.1 + typescript@6.0.3 in an app using both captureRef() and <ViewShot>, with no customConditions opt-out. No runtime code changed.

🤖 Generated with Claude Code

https://claude.ai/code/session_01C55VgRJc8C6jJdtq1xZgLe