Checklist

• I have searched the existing issues for similar feature requests.
• I added a descriptive title and summary to this issue.

Summary

If you activate dataframe selections, we show checkboxes on hover in the leftmost column but it’s not easy to see that. Maybe we should make it a bit more obvious?

How?

We could just configure the rowmarker style in glide data grid to "checkbox-visible":

Additional Context

No response