Nullable channel results in exceptions

[CorwinDev]

Echo Version

2.3.7

Laravel Version

12.61.1

PHP Version

8.4.21

NPM Version

11.12.1

Database Driver & Version

No response

Description

v2.3.5 released a breaking change making the channel() function nullable, this resulted in errors when trying to access the channel function directly after instantiating the useEcho channel for example.

Furthermore, pusher-js was dropped as dependency which will remove it for users that installed this package standalone (I know that the docs have listed install pusher-js too)

I feel like this update should've been a v3 of this package

Steps To Reproduce

const { channel } = useEchoPresence('online', [], () => { });

channel()
    .here((members: string[]) => {
        // Do something with members
    })

With channel() being null on initial setup the above code will result in Cannot read properties of null (reading 'here')