automation-controller: automation-controller-container: automation-controller: Schedule and WorkflowJobTemplateNode scm_branch prompt bypasses leading-dash git-argument guard

LaunchConfigurationBaseSerializer.scmbranch has no validatescmbranch leading-dash check, unlike Project/JobTemplate/JobLaunch serializers. Schedule and WFJT Node accept --upload-pack=/bin/id as scmbranch. Currently blocked at runtime by jobs.py:1502 ValueError check defense-in-depth, but the API...