settings_config: Pass settings object as parameter to all_notifications.

We pass user_settings object to all_notifications and
get_notifications_table_row_data such that we can use these
functions for realm-level settings also.

static/js/user_settings.ts

@@ -1,4 +1,4 @@
-type UserSettingsType = {
+export type UserSettingsType = {
     color_scheme: number;
     default_language: string;
     default_view: string;