gateway: quiet Telegram operational chatter

tests/gateway/test_run_progress_topics.py

@@ -784,12 +784,13 @@ async def test_run_agent_surfaces_real_interim_commentary(monkeypatch, tmp_path)
 
 
 @pytest.mark.asyncio
-async def test_run_agent_surfaces_interim_commentary_by_default(monkeypatch, tmp_path):
+async def test_run_agent_surfaces_interim_commentary_when_globally_enabled(monkeypatch, tmp_path):
     adapter, result = await _run_with_agent(
         monkeypatch,
         tmp_path,
         CommentaryAgent,
-        session_id="sess-commentary-default-on",
+        session_id="sess-commentary-global-on",
+        config_data={"display": {"interim_assistant_messages": True}},
     )
 
     assert any(call["content"] == "I'll inspect the repo first." for call in adapter.sent)