"No channel data for channel/nick" errors when trying to handle mode changes

[Half-Shot]

We fetch the BridgedClient of the user being opped, and then get the prefix's for that username. It sounds like the .chanData request on the client is failing, and this is causing the bridge to not handle the mode change. I'd expect to see some data for this channel as we only emit a +mode if we know the channel. https://github.com/matrix-org/node-irc/blob/985b3380857e5d816934bf1c1bfc44ed60e70081/src/irc.ts#L513-L517

[Half-Shot]

This should be fixed in #1732 .