Remove hardcoded bits from LiteJet integration (#106281)

Use the new properties from pylitejet v0.6.0.

tests/components/litejet/conftest.py

@@ -1,6 +1,6 @@
 """Fixtures for LiteJet testing."""
 from datetime import timedelta
-from unittest.mock import AsyncMock, patch
+from unittest.mock import AsyncMock, Mock, patch
 
 import pytest
 
@@ -21,6 +21,12 @@ def mock_litejet():
         async def get_switch_name(number):
             return f"Mock Switch #{number}"
 
+        def get_switch_keypad_number(number):
+            return number + 100
+
+        def get_switch_keypad_name(number):
+            return f"Mock Keypad #{number + 100}"
+
         mock_lj = mock_pylitejet.return_value
 
         mock_lj.switch_pressed_callbacks = {}
@@ -65,6 +71,8 @@ def mock_litejet():
         mock_lj.get_switch_name = AsyncMock(side_effect=get_switch_name)
         mock_lj.press_switch = AsyncMock()
         mock_lj.release_switch = AsyncMock()
+        mock_lj.get_switch_keypad_number = Mock(side_effect=get_switch_keypad_number)
+        mock_lj.get_switch_keypad_name = Mock(side_effect=get_switch_keypad_name)
 
         mock_lj.scenes.return_value = range(1, 3)
         mock_lj.get_scene_name = AsyncMock(side_effect=get_scene_name)
@@ -74,6 +82,7 @@ def mock_litejet():
         mock_lj.start_time = dt_util.utcnow()
         mock_lj.last_delta = timedelta(0)
         mock_lj.connected = True
+        mock_lj.model_name = "MockJet"
 
         def connected_changed(connected: bool, reason: str) -> None:
             mock_lj.connected = connected