Verify persistant notifications can be dismissed by the id they are created with (#94112)

tests/components/persistent_notification/test_init.py

@@ -212,3 +212,27 @@ async def test_ws_get_subscribe(
     assert msg["event"]
     event = msg["event"]
     assert event["type"] == "removed"
+
+
+async def test_manual_notification_id_round_trip(hass: HomeAssistant) -> None:
+    """Test that a manual notification id can be round tripped."""
+    notifications = pn._async_get_or_create_notifications(hass)
+    assert len(notifications) == 0
+
+    await hass.services.async_call(
+        pn.DOMAIN,
+        "create",
+        {"notification_id": "synology_diskstation_hub_notification", "message": "test"},
+        blocking=True,
+    )
+
+    assert len(notifications) == 1
+
+    await hass.services.async_call(
+        pn.DOMAIN,
+        "dismiss",
+        {"notification_id": "synology_diskstation_hub_notification"},
+        blocking=True,
+    )
+
+    assert len(notifications) == 0