BIM seeder: sort by start_date if query has timeline active

modules/bim_seeder/config/locales/en.seeders.bim.yml

@@ -1029,7 +1029,7 @@ en:
               - name: Project plan
                 status: open
                 timeline: true
-                sort_by: id
+                sort_by: start_date
                 hierarchy: true
               - name: Milestones
                 status: open
@@ -1042,7 +1042,7 @@ en:
                   - subject
                   - start_date
                   - due_date
-                sort_by: id
+                sort_by: start_date
               - name: Tasks
                 status: open
                 type: :default_type_task