Pubsub has no peers in latest version

[sethhrbek]

When creating a node with the following configuration:

    transports: [
      new TCP(),
      new WebSockets(),
      new WebRTCStar({wrtc}),
    ],
    connectionEncryption: [
      new Noise()
    ],
    streamMuxers: [
      new Mplex()
    ],
    pubsub: new FloodSub({
      enabled: true,
      canRelayMessage: true,
      emitSelf: false
    }),
    dht: new KadDHT({
      protocolPrefix: PROTOCOL_PREFIX,
      clientMode: false
    }),
    peerDiscovery: [
      webRtcStar.discovery
    ]

The newer versions of floodSub (>=2.0.0) don't work (messages don't get transferred between nodes). The farthest I've diagnosed this issue is the pubsub peer list is returning an empty array, despite the node having peers (this.node.getPeers() returns a populated array, this.node.pubsub.peers returns empty).

This issue does not exist when using floodsub < 2.0.0 (pubsub peer list is populated and pubsub messaging works).

Tested the issue on libp2p 0.37.2 and 0.37.3

[BigLep]

@sethhrbek: this is surprising because we test message delivery in our test suite. Can you please put together a reproduction case that maintainers can easily run?

Also, is there any reason you're not using gossipsub?

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