Convert disabled_by to DeviceEntryDisabler on load (#63944)

Co-authored-by: Paulus Schoutsen <balloob@gmail.com>

homeassistant/helpers/device_registry.py

@@ -584,7 +584,9 @@ class DeviceRegistry:
                     configuration_url=device["configuration_url"],
                     # type ignores (if tuple arg was cast): likely https://github.com/python/mypy/issues/8625
                     connections={tuple(conn) for conn in device["connections"]},  # type: ignore[misc]
-                    disabled_by=device["disabled_by"],
+                    disabled_by=DeviceEntryDisabler(device["disabled_by"])
+                    if device["disabled_by"]
+                    else None,
                     entry_type=DeviceEntryType(device["entry_type"])
                     if device["entry_type"]
                     else None,

tests/helpers/test_device_registry.py

@@ -640,6 +640,7 @@ async def test_loading_saving_data(hass, registry, area_registry):
         identifiers={("hue", "abc")},
         manufacturer="manufacturer",
         model="light",
+        entry_type=device_registry.DeviceEntryType.SERVICE,
     )
 
     assert orig_light4.id == orig_light3.id
@@ -679,6 +680,15 @@ async def test_loading_saving_data(hass, registry, area_registry):
     assert orig_light == new_light
     assert orig_light4 == new_light4
 
+    # Ensure enums converted
+    for (old, new) in (
+        (orig_via, new_via),
+        (orig_light, new_light),
+        (orig_light4, new_light4),
+    ):
+        assert old.disabled_by is new.disabled_by
+        assert old.entry_type is new.entry_type
+
     # Ensure a save/load cycle does not keep suggested area
     new_kitchen_light = registry2.async_get_device({("hue", "999")})
     assert orig_kitchen_light.suggested_area == "Kitchen"