( batcher ) Change 'Web Socket Connection error: Trying to work with closed connection' to info

[MauroToscano]

[JuArce]

This log comes from ws library. For example

if let Err(e) = batcher.handle_new_block(block_number).await {
    error!("Error when handling new block: {:?}", e);
};

tungstenite/error.rs

    /// Trying to work with already closed connection.
    ///
    /// Trying to read or write after receiving `ConnectionClosed` causes this.
    ///
    /// As opposed to `ConnectionClosed`, this indicates your code tries to operate on the
    /// connection when it really shouldn't anymore, so this really indicates a programmer
    /// error on your part.
    #[error("Trying to work with closed connection")]
    AlreadyClosed,

If we change this to info, all errors from ws connection will be treated as info. I'm not sure if in rust we can exclude an speciific error