Add jwtTokens / jwtTokenPoolJson to the TypeScript API, parse and validate
(max 128) on Android and iOS, persist jwtTokenPool with native_fetcher_config
when persistToken is true (Android), and extend NativeNotificationContentFetcher
with a four-argument configure overload delegating to the existing three-arg
default. iOS stores the pool in UserDefaults JSON and uses primary jwt or first
pool entry in the plugin background fetch path. Bump version to 2.2.0. Update
TestNativeFetcher to exercise the new configure overload.
9121b1e0f7