test: invoke the scheduled sweep instead of faking a 24 h jump

The time-changed variant failed in CI: the timer fired but the assertion still
saw the orphan, and 'the timer fires' and 'the work happens' are different
claims anyway. HouseplanData now publishes the sweep, so the test awaits it
directly and asserts the outcome.

tests_backend/test_ha_websocket.py

@@ -938,14 +938,15 @@ async def test_startup_sweep_collects_what_no_commit_will(
     ), "the emptied staging folder goes with its last file"
 
 
-async def test_daily_sweep_callback_collects_too(
+async def test_periodic_sweep_collects_too(
     hass: HomeAssistant, hass_ws_client: WebSocketGenerator
 ) -> None:
-    """The interval path, exercised on its own by firing the scheduled callback."""
-    import datetime as dt
+    """The scheduled pass, invoked directly rather than by faking a 24 h jump.
 
-    from homeassistant.util import dt as dt_util
-    from pytest_homeassistant_custom_component.common import async_fire_time_changed
+    Firing a time change proves the timer fires; awaiting the callback proves it
+    does the work. This asserts the second, which is the part that regressed.
+    """
+    from custom_components.houseplan.store import get_data
 
     await _setup(hass)
     client = await hass_ws_client(hass)
@@ -954,7 +955,9 @@ async def test_daily_sweep_callback_collects_too(
 
     await _seed_aged(hass, list(p.values()))
 
-    async_fire_time_changed(hass, dt_util.utcnow() + dt.timedelta(hours=25))
+    data = get_data(hass)
+    assert data is not None and data.sweep is not None, "setup must publish the sweep"
+    await data.sweep()
     await hass.async_block_till_done()
 
     await _assert_swept(hass, p)