Add export for useSettingsNotifications hook

src/hooks/index.ts

@@ -21,4 +21,5 @@ export { useRegistrationStatus } from './useRegistrationStatus';
 export { useSettings } from './useSettings';
 export { useSoapboxConfig } from './useSoapboxConfig';
 export { useSystemTheme } from './useSystemTheme';
-export { useTheme } from './useTheme';
+export { useTheme } from './useTheme';
+export { useSettingsNotifications } from './useSettingsNotifications';