config_readonly_backdoor
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With config_readodnly, this module allows site builders to open up importing configurations using the "Single import" page.
Set configuration types to be whitelisted on the "Single import" page:
$settings['config_readonly_backdoor_whitelist'] = ['webform', 'system.simple'];
Allow importing of all types of configurations temporarily:
drush state:set config_readonly_backdoor.allow_all TRUE