feat: ViewTransitionWrapper shared component with stable react-dom fallback

Wraps children in React's ViewTransition (canary API) when available,
falling back to Fragment in environments where ViewTransition is undefined
(test env, stable react-dom). Add react/canary to tsconfig types to
expose the ViewTransition component type.

src/shared/ui/ViewTransitionWrapper/index.ts

@@ -0,0 +1 @@
+export { ViewTransitionWrapper } from './ui/ViewTransitionWrapper';