@source{Stream.emit} gives the wrong error message

[stew]

What's the message you're seeing?

      -- The name #rfi1v9429f is assigned to the reference ShortHash {prefix
      =
      "rfi1v9429f9qluv533l2iba77aadttilrpmnhljfapfnfa6sru2nr8ibpqvib9nc4s4nb9s1as45upsfqfqe6ivqi2p82b2vd866it8",
      cycle = Nothing, cid = Nothing}, which is missing from the codebase.
      Tip: You might need to repair the codebase manually.

What would a better version look like?

Stream.emit is an ability member, not a term.

Environment (please complete the following information):

• unison version: 335512e (built on 2024-06-11)
• OS/Architecture: debian 12 / amd64