Currently the impactedModules parameter is mandatory … I will make it optional to support your case - please note it might take a while - not sure how to add changes to 2.5+ version since we already have a release
Nevertheless - please add impactedModules to your buttons and use some not existing thing id for reference - this way no update will be made since thing (module) will not be found, i.e.:
impactedModules = "switch-module:XXX:1"
You can use above workaround (assuming there is no thing with id = XXX defined in your configuration 
) until the impactedModules gets optional.