Improve typing in core service registration (#63005)

Co-authored-by: epenet <epenet@users.noreply.github.com>

homeassistant/core.py

@@ -1330,7 +1330,7 @@ class ServiceRegistry:
         self,
         domain: str,
         service: str,
-        service_func: Callable,
+        service_func: Callable[[ServiceCall], Awaitable[None] | None],
         schema: vol.Schema | None = None,
     ) -> None:
         """
@@ -1347,7 +1347,7 @@ class ServiceRegistry:
         self,
         domain: str,
         service: str,
-        service_func: Callable,
+        service_func: Callable[[ServiceCall], Awaitable[None] | None],
         schema: vol.Schema | None = None,
     ) -> None:
         """

homeassistant/helpers/entity_component.py

@@ -198,7 +198,7 @@ class EntityComponent:
         if isinstance(schema, dict):
             schema = cv.make_entity_service_schema(schema)
 
-        async def handle_service(call: Callable) -> None:
+        async def handle_service(call: ServiceCall) -> None:
             """Handle the service."""
             await self.hass.helpers.service.entity_service_call(
                 self._platforms.values(), func, call, required_features

homeassistant/helpers/service.py

@@ -716,7 +716,7 @@ def async_register_admin_service(
     hass: HomeAssistant,
     domain: str,
     service: str,
-    service_func: Callable[[ServiceCall], Awaitable | None],
+    service_func: Callable[[ServiceCall], Awaitable[None] | None],
     schema: vol.Schema = vol.Schema({}, extra=vol.PREVENT_EXTRA),
 ) -> None:
     """Register a service that requires admin access."""