Fixed the mismatched first frame in converting lerobot#382

mingxueg-nv wants to merge 1 commit intoisaac-sim:mainisaac-sim/IsaacLab-Arena:mainfrom

mingxueg-nv:mingxue/resolve_mismatched_first_framemingxueg-nv/IsaacLab-Arena:mingxue/resolve_mismatched_first_frameCopy head branch name to clipboard