🐛 [BUG] - Remove auto-subscription of delegate in addDelegate

[0xNilesh]

Expected Behaviour

addDelegate auto-subscribes the delegate address to the channel owner, but don't unsubscribe it in removeDelegate
Due to this, any malicious channel can gain subs by just adding delegate and then calling removeDelegate to remove their authority

Current Behaviour

addDelegate auto-subscribe the delegate address to the caller

Reproduction steps

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Screenshots

![DESCRIPTION](LINK.png)

POC if available

No response

Contract Name

Comm Contract

Chains

No response