crash with NeedTypeForBuiltinMetadata on ucm startup

[aryairani]

See https://unisoncomputing.slack.com/archives/CF8D3DCP3/p1697048365160779 for some repro and code links.

arya@halp /tmp % ucm

  Now starting the Unison Codebase Manager (UCM)...


   _____     _             
  ö  ö  ö___ö_ö___ ___ ___ 
  ö  ö  ö   ö ö_ -ö . ö   ö
  ö_____ö_ö_ö_ö___ö___ö_ö_ö
  
  👋 Welcome to Unison!
  
  You are running version: release/M5h


  📚 Read the official docs at https://www.unison-lang.org/learn/
  
  Hint: Type 'projects' to list all your projects, or 'project.create' to start something new.

ambitious-chameleon/main> 
SqliteQueryException
    ä sql = "SELECT text FROM text WHERE id = ?"
    , params =
        Ä SQLInteger 129 Å
    , exception = NeedTypeForBuiltinMetadata "Nat.+"
    , callStack = ÄÅ
    , connection = Connection
        ä name = "main"
        , file = "/Users/arya/.unison/v2/unison.sqlite3"
        å
    , threadId = ThreadId 19
    å

[aryairani]

could be superseded by #4429, but that has a lot of steps