SplitButton: aria-expanded is not correct

[tri-harmoney]

Describe the bug

If the TieredMenu is opened aria-expanded is set to true, but when the TieredMenu is closed using the escape key or by clicking outside the element it is not set to false.

Environment

macOS 14.5 (23F79)

Reproducer

No response

Angular version

17.3.7

PrimeNG version

17.16.1

Build / Runtime

Angular CLI App

Language

TypeScript

Node version (for AoT issues node --version)

18.13.0

Browser(s)

No response

Steps to reproduce the behavior

1. Open the TieredMenu by clicking on the chevron.
2. Check aria-expanded is true
3. Close TieredMenu by pressing escape button or by clicking outside element
4. 'aria-expandedis not set tofalse`

Expected behavior

'aria-expandedshould befalse` when menu is closed.