Use correct state in Entity repr and output similar value to State class (#87519)

* Use correct state in Entity repr

* Test Entity.__repr__

* Align with State class

homeassistant/helpers/entity.py

@@ -957,7 +957,7 @@ class Entity(ABC):
 
     def __repr__(self) -> str:
         """Return the representation."""
-        return f"<Entity {self.name}: {self.state}>"
+        return f"<entity {self.entity_id}={self._stringify_state(self.available)}>"
 
     async def async_request_call(self, coro: Coroutine[Any, Any, Any]) -> None:
         """Process request batched."""

tests/helpers/test_entity.py

@@ -953,3 +953,18 @@ async def test_translation_key(hass):
     )
     mock_entity2.entity_id = "hello.world"
     assert mock_entity2.translation_key == "from_entity_description"
+
+
+async def test_repr_using_stringify_state():
+    """Test that repr uses stringify state."""
+
+    class MyEntity(MockEntity):
+        """Mock entity."""
+
+        @property
+        def state(self):
+            """Return the state."""
+            raise ValueError("Boom")
+
+    entity = MyEntity(entity_id="test.test", available=False)
+    assert str(entity) == "<entity test.test=unavailable>"