trigger elm config save during e config save

if an e config save is queued, it may also be the case that an elm config
value has been updated due to the intertwined nature of these configs.
adding a silent save here without a flush will account for such cases

src/bin/e_config.c

@@ -2149,6 +2149,7 @@ _e_config_save_cb(void *data EINA_UNUSED)
 {
    e_config_profile_save();
    e_module_save_all();
+   elm_config_save();
    e_config_domain_save("e", _e_config_edd, e_config);
    e_config_domain_save("e_bindings", _e_config_binding_edd, e_bindings);
    _e_config_save_defer = NULL;