Adopt config_rewrite for install time config

Enabled config_rewrite & removed rest_menu_items.config from install hook.
rest.resource.rest_menu_item cant be imported via config_rewrite as it is part of the rest_menu_items_test module, which is not enabled/required.

#nr

I commented the MR, please see the small remarks there.

I think the goal here should be to remove all the custom config-import code, if config_rewrite is not able to provide this, it seems to be not the full solution.
But - when rest.resource.rest_menu_item is not provided by a module, could we just put it into the regular install config? or optional config?

checking

yes, rest.resource.rest_menu_item can be just default config #nr

Automatically closed - issue fixed for 2 weeks with no activity.