Improve the presentation of page properties report macro sortable columns

Issue Summary

After this bug was previously fixed: https://jira.atlassian.com/browse/CONFCLOUD-73335, the columns are now sortable on the page properties report macro. However, there is no way to tell that sorting is possible when hovering over the columns as even the mouse cursor does not suggest this.

In the legacy editor, we also have icons, suggesting that column headers are clickable to sort the values.

Steps to Reproduce

1. Create a page with page properties macro
2. Create another page containing a page properties report macro
3. Hover over the column header

Expected Results

User is presented with an option to sort, through a mouse cursor change or some icons that suggest that it is possible to sort the columns

Actual Results

The column headers appear as plain text with no hint that they are sortable

Workaround

Currently there is no known workaround for this behavior. A workaround will be added here when available