fix: only mark a connection as transient if the relay has applied limits

[achingbrain]

In go-libp2p, transient connections are judged based on whether the relay node has restrictions on the current connection. Reference code: https://github.com/libp2p/go-libp2p/blob/fccfbe7a4b6841325100038b83f86cd4e097b9a1/p2p/protocol/circuitv2/client/dial.go#L181

This submission aligns js-libp2p logic with go-libp2p logic.

Change checklist

• I have performed a self-review of my own code
• I have made corresponding changes to the documentation if necessary (this includes comments as well)
• I have added tests that prove my fix is effective or that my feature works