identify: Exchange fails with go-libp2p over QUIC when initialy closing

To receive a remote's identify information one opens a stream and waits for the remote to send the identify payload in that stream.

When connecting to a go-libp2p node over a QUIC connection, identify exchanges fail.

https://github.com/libp2p/rust-libp2p/blob/68d0f882bd7fc0b4a83a11d0d034ae9f085f3e62/protocols/identify/src/protocol.rs#L192-L196

Changing the above to flush instead of close resolves the issue. Note that flushing instead of no action at all is needed in case multistream-select V1Lazy is used where the multistream-select message is only send on the stream once userdata is send or it is flushed.

Occurs with the rust-libp2p punchr client when connecting to go-libp2p IPFS nodes.

Opening with little details for now to have a central place to track. @elenaf9 in case you need more details, let me know.