Follow-up from "Implement saving config content for pipelines"
The following discussion from !21827 (merged) should be addressed:
Can we create a separate issue where we remove the feature flag
ci_root_config_contentin %12.8 if no issues arise?
In that issue we can also mention that we can remove assigning
@command.config_content = config.contentand instead use
Ci::Pipeline::Chain::steps (e.g. in