BUG: Style index name row does not label column class

BUG: Style index name row does not label column class: a task in MiMo-V2.6-RL-harbor-code: MiMo-V2.6-RL Code (Harbor) (Harbor dataset). The Styler ignores column class on the index name row and just inputs blank , which is a pain for controlling table styles using column selectors.