MM-26753 Create initial sidebar categories on demand if migration hasn't ran (#14981)

* MM-26753 Change CreateInitialSidebarCategories to only take a user ID

* MM-26753 Create initial sidebar categories on demand if migration hasn't ran

* Wait for sidebar categories to be loaded in case of replication lag

app/team.go

@@ -653,7 +653,7 @@ func (a *App) JoinUserToTeam(team *model.Team, user *model.User, userRequestorId
 		return err
 	}
 
-	if err := a.createInitialSidebarCategories(user, team); err != nil {
+	if err := a.createInitialSidebarCategories(user.Id, team.Id); err != nil {
 		mlog.Error(
 			"Encountered an issue creating default sidebar categories.",
 			mlog.String("user_id", user.Id),