FetchServiceImageMetaData on ConfigAgent is a pure passthrough — remove it and call dbdaemon directly

FetchServiceImageMetaData on ConfigAgent is a pure passthrough — remove it and call dbdaemon directly: a task in MiMo-V2.6-RL-harbor-code: MiMo-V2.6-RL Code (Harbor) (Harbor dataset). Looking at how isImageSeeded (in the instance controller) gets the service image metadata today, it goes through…