component-loader: pass core and cancellable parameters in load()

Regarding the core parameter, the case used to be that WpComponentLoader
was a WpPlugin, so it had a reference to the core internally, but since
this is no longer a requirement, we need to pass this explicitly

modules/module-lua-scripting/api/require.c

@@ -94,7 +94,7 @@ wp_require_api_transition_execute_step (WpTransition * transition, guint step)
             "libwireplumber-module-%s", api_name);
 
         self->pending_plugins++;
-        wp_core_load_component (core, module_name, "module", NULL,
+        wp_core_load_component (core, module_name, "module", NULL, NULL,
             (GAsyncReadyCallback) on_plugin_loaded, self);
       }
     }