Table: aria-sort not updated when sorting multiple columns

[ben-lewis-wtw]

Describe the bug

Appears to be a regression of #11051.

When sorting a column on a p-table with sortMode="multiple", the aria-sort attribute of the table column header is stuck as ascending, and does not update to descending.

This can be observed on the PrimeNG showcase (https://primeng.org/table#multiple-columns-sort) and on the linked stackblitz reproduction.

Environment

Angular 18, PrimeNG 18, Chrome

Reproducer

https://stackblitz.com/edit/github-gdsf7p9w?file=src%2Fapp%2Fapp.component.html

Angular version

18.0.1

PrimeNG version

^18.0.0-rc.1

Build / Runtime

Angular CLI App

Language

TypeScript

Node version (for AoT issues node --version)

18.20.3

Browser(s)

Chrome 131.0.6778.140

Steps to reproduce the behavior

1. On a p-table with sortMode="multiple", click a column header to enable sorting on that column.
2. Open devtools and inspect the <th> element of the sorted column.
3. Note that aria-sort is ascending.
4. Click the column header again to change the sort order.
5. Note that aria-sort is still ascending, when it should now be descending`.

Expected behavior

aria-sort should reflect the correct sort direction of the column.