fix: align AccessibilityRole TypeScript definitions (#56863)

Summary:
- Align `ViewAccessibility.d.ts`'s `AccessibilityRole` union with the roles already supported by the Flow type and generated API snapshot.
- Add TypeScript type coverage for `grid` and `pager`, which are among the roles missing from this declaration.

## Changelog:

[General] [Fixed] - Align TypeScript accessibility role definitions with supported React Native accessibility roles

Pull Request resolved: https://github.com/facebook/react-native/pull/56863

Test Plan:
- `npx prettier --check packages/react-native/Libraries/Components/View/ViewAccessibility.d.ts packages/react-native/types/__typetests__/index.tsx`
- `npm run test-typescript -- --pretty false`
- `npm run test-generated-typescript -- --pretty false`

Reviewed By: huntie

Differential Revision: D105592939

Pulled By: Abbondanzo

fbshipit-source-id: 9b88c22091dc4051cc1c1c45a7424f078bc4dc54