Cleanup ESPHome update tests to avoid accessing integration internals (#141786)

We should not access DomainData directly in the test

tests/components/esphome/test_update.py

@@ -2,7 +2,7 @@
 
 from collections.abc import Awaitable, Callable
 from typing import Any
-from unittest.mock import Mock, patch
+from unittest.mock import patch
 
 from aioesphomeapi import (
     APIClient,
@@ -374,17 +374,22 @@ async def test_update_entity_dashboard_discovered_after_startup_but_update_faile
 
 
 async def test_update_entity_not_present_without_dashboard(
-    hass: HomeAssistant, stub_reconnect, mock_config_entry, mock_device_info
+    hass: HomeAssistant,
+    mock_client: APIClient,
+    mock_esphome_device: Callable[
+        [APIClient, list[EntityInfo], list[UserService], list[EntityState]],
+        Awaitable[MockESPHomeDevice],
+    ],
 ) -> None:
     """Test ESPHome update entity does not get created if there is no dashboard."""
-    with patch(
-        "homeassistant.components.esphome.update.DomainData.get_entry_data",
-        return_value=Mock(available=True, device_info=mock_device_info, info={}),
-    ):
-        assert await hass.config_entries.async_setup(mock_config_entry.entry_id)
-        await hass.async_block_till_done()
+    await mock_esphome_device(
+        mock_client=mock_client,
+        entity_info=[],
+        user_service=[],
+        states=[],
+    )
 
-    state = hass.states.get("update.none_firmware")
+    state = hass.states.get("update.test_firmware")
     assert state is None