message: Only set TEs to billable when the WS they're in is premium (lib)
  Fixes
diff: @@ -4096,7 +4096,7 @@ Project *Context::CreateProject(
  ws = user_->related.WorkspaceByID(workspace_id);
  if (ws) {
  - billable = ws->ProjectsBillableByDefault();
  + billable = ws->ProjectsBillableByDefault() && ws->Premium();
  }
  std::string client_name("");
  