Mark setAccessibilityFocus as deprecated (#54968)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/54968

The `AccessibilityInfo.setAccessibilityFocus` API is unsupported in the new architecture and a perfectly valid alternative exists that *is* supported: `AccessibilityInfo.sendAccessibilityEvent`. This change marks the prior as deprecated with a code comment pointing to the new API and adds a missing type to the `AccessibilityEventTypes` type signature for `windowStateChange`

Changelog: [General][Deprecated] - Deprecated `AccessibilityInfo.setAccessibilityFocus` in favor of `AccessibilityInfo.sendAccessibilityEvent`

Reviewed By: mdvacca

Differential Revision: D89729103

fbshipit-source-id: 4e55adb9a7ae7ba773e1e258359e67106488bee3