Init template trigger binary sensor to None instead of False (#62769)

homeassistant/components/template/binary_sensor.py

@@ -324,7 +324,7 @@ class TriggerBinarySensorEntity(TriggerEntity, BinarySensorEntity):
 
         self._delay_cancel = None
         self._auto_off_cancel = None
-        self._state = False
+        self._state = None
 
     @property
     def is_on(self) -> bool:

tests/components/template/test_binary_sensor.py

@@ -909,11 +909,11 @@ async def test_trigger_entity(hass, start_ha):
     await hass.async_block_till_done()
     state = hass.states.get("binary_sensor.hello_name")
     assert state is not None
-    assert state.state == OFF
+    assert state.state == STATE_UNKNOWN
 
     state = hass.states.get("binary_sensor.bare_minimum")
     assert state is not None
-    assert state.state == OFF
+    assert state.state == STATE_UNKNOWN
 
     context = Context()
     hass.bus.async_fire("test_event", {"beer": 2}, context=context)
@@ -976,7 +976,7 @@ async def test_trigger_entity(hass, start_ha):
 async def test_template_with_trigger_templated_delay_on(hass, start_ha):
     """Test binary sensor template with template delay on."""
     state = hass.states.get("binary_sensor.test")
-    assert state.state == OFF
+    assert state.state == STATE_UNKNOWN
 
     context = Context()
     hass.bus.async_fire("test_event", {"beer": 2}, context=context)