Moving from auth-helpers to SSR package, invalidating session?

I was previously using auth-helpers for sveltekit and in the docs there was a step subscribing to auth changes and invalidating auth (https://supabase.com/docs/guides/auth/auth-helpers/sveltekit#setting-up-the-event-listener-on-the-client-side). Is this no longer necessary with the ssr package?
Convenience helpers for implementing user authentication in SvelteKit.
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