Make client tracker use common UniFi entity class (#84942)

* Make client tracker use common UniFi entity class

* Fix tests

* Fix mypy

* Remove legacy data

* Fix comment: skip else use return

* Minor change

* Remove missed stuff from previous rebase

* Import async_device_available_fn from entities.py rather than specifying it in device_tracker

* Avoid using asserts

* Keep explicit parenthesis for readability

* Allow loading entities on option changes

tests/components/unifi/test_device_tracker.py

@@ -156,7 +156,7 @@ async def test_tracked_clients(
 
     # State change signalling works
 
-    client_1["last_seen"] += 1
+    client_1["last_seen"] = dt_util.as_timestamp(dt_util.utcnow())
     mock_unifi_websocket(message=MessageKey.CLIENT, data=client_1)
     await hass.async_block_till_done()
 
@@ -244,6 +244,7 @@ async def test_tracked_wireless_clients_event_source(
 
     # New data
 
+    client["last_seen"] = dt_util.as_timestamp(dt_util.utcnow())
     mock_unifi_websocket(message=MessageKey.CLIENT, data=client)
     await hass.async_block_till_done()
     assert hass.states.get("device_tracker.client").state == STATE_HOME
@@ -703,6 +704,11 @@ async def test_option_ssid_filter(
     mock_unifi_websocket(message=MessageKey.CLIENT, data=client_on_ssid2)
     await hass.async_block_till_done()
 
+    new_time = dt_util.utcnow() + controller.option_detection_time
+    with patch("homeassistant.util.dt.utcnow", return_value=new_time):
+        async_fire_time_changed(hass, new_time)
+        await hass.async_block_till_done()
+
     # SSID filter marks client as away
     assert hass.states.get("device_tracker.client").state == STATE_NOT_HOME
 
@@ -726,7 +732,7 @@ async def test_option_ssid_filter(
 
     # Time pass to mark client as away
 
-    new_time = dt_util.utcnow() + controller.option_detection_time
+    new_time += controller.option_detection_time
     with patch("homeassistant.util.dt.utcnow", return_value=new_time):
         async_fire_time_changed(hass, new_time)
         await hass.async_block_till_done()
@@ -745,9 +751,7 @@ async def test_option_ssid_filter(
     mock_unifi_websocket(message=MessageKey.CLIENT, data=client_on_ssid2)
     await hass.async_block_till_done()
 
-    new_time = (
-        dt_util.utcnow() + controller.option_detection_time + timedelta(seconds=1)
-    )
+    new_time += controller.option_detection_time
     with patch("homeassistant.util.dt.utcnow", return_value=new_time):
         async_fire_time_changed(hass, new_time)
         await hass.async_block_till_done()
@@ -784,10 +788,9 @@ async def test_wireless_client_go_wired_issue(
     # Client is wireless
     client_state = hass.states.get("device_tracker.client")
     assert client_state.state == STATE_HOME
-    assert client_state.attributes["is_wired"] is False
 
     # Trigger wired bug
-    client["last_seen"] += 1
+    client["last_seen"] = dt_util.as_timestamp(dt_util.utcnow())
     client["is_wired"] = True
     mock_unifi_websocket(message=MessageKey.CLIENT, data=client)
     await hass.async_block_till_done()
@@ -795,7 +798,6 @@ async def test_wireless_client_go_wired_issue(
     # Wired bug fix keeps client marked as wireless
     client_state = hass.states.get("device_tracker.client")
     assert client_state.state == STATE_HOME
-    assert client_state.attributes["is_wired"] is False
 
     # Pass time
     new_time = dt_util.utcnow() + controller.option_detection_time
@@ -806,7 +808,6 @@ async def test_wireless_client_go_wired_issue(
     # Marked as home according to the timer
     client_state = hass.states.get("device_tracker.client")
     assert client_state.state == STATE_NOT_HOME
-    assert client_state.attributes["is_wired"] is False
 
     # Try to mark client as connected
     client["last_seen"] += 1
@@ -816,7 +817,6 @@ async def test_wireless_client_go_wired_issue(
     # Make sure it don't go online again until wired bug disappears
     client_state = hass.states.get("device_tracker.client")
     assert client_state.state == STATE_NOT_HOME
-    assert client_state.attributes["is_wired"] is False
 
     # Make client wireless
     client["last_seen"] += 1
@@ -827,7 +827,6 @@ async def test_wireless_client_go_wired_issue(
     # Client is no longer affected by wired bug and can be marked online
     client_state = hass.states.get("device_tracker.client")
     assert client_state.state == STATE_HOME
-    assert client_state.attributes["is_wired"] is False
 
 
 async def test_option_ignore_wired_bug(
@@ -859,7 +858,6 @@ async def test_option_ignore_wired_bug(
     # Client is wireless
     client_state = hass.states.get("device_tracker.client")
     assert client_state.state == STATE_HOME
-    assert client_state.attributes["is_wired"] is False
 
     # Trigger wired bug
     client["is_wired"] = True
@@ -869,7 +867,6 @@ async def test_option_ignore_wired_bug(
     # Wired bug in effect
     client_state = hass.states.get("device_tracker.client")
     assert client_state.state == STATE_HOME
-    assert client_state.attributes["is_wired"] is True
 
     # pass time
     new_time = dt_util.utcnow() + controller.option_detection_time
@@ -880,7 +877,6 @@ async def test_option_ignore_wired_bug(
     # Timer marks client as away
     client_state = hass.states.get("device_tracker.client")
     assert client_state.state == STATE_NOT_HOME
-    assert client_state.attributes["is_wired"] is True
 
     # Mark client as connected again
     client["last_seen"] += 1
@@ -890,7 +886,6 @@ async def test_option_ignore_wired_bug(
     # Ignoring wired bug allows client to go home again even while affected
     client_state = hass.states.get("device_tracker.client")
     assert client_state.state == STATE_HOME
-    assert client_state.attributes["is_wired"] is True
 
     # Make client wireless
     client["last_seen"] += 1
@@ -901,7 +896,6 @@ async def test_option_ignore_wired_bug(
     # Client is wireless and still connected
     client_state = hass.states.get("device_tracker.client")
     assert client_state.state == STATE_HOME
-    assert client_state.attributes["is_wired"] is False
 
 
 async def test_restoring_client(