Component: p-dropdown emits changes when selected option did not change

[Airdevelopments]

Describe the bug

We recently updated from PrimeNG 15 to 17.

There seems to be a change in the behavior of the p-dropdown component:

Back in v15, when selecting the already selected option in a p-dropdown again, no change would be emitted. Now in v17 it does seem to do so.

The issue can be cruedly reproduced using the official component docs:

V15:

V17

The question is: Is this new desired behavior or a regression?

Environment

primeng: 17.6
angular: 17.1

Reproducer

No response

Angular version

17.1.0

PrimeNG version

17.6.0

Build / Runtime

Angular CLI App

Language

TypeScript

Node version (for AoT issues node --version)

18.16.0

Browser(s)

Chrome 120

Steps to reproduce the behavior

Open the docs on v15 and v17 as described above:

v15: https://www.primefaces.org/primeng-v15-lts/table#filter-row

v17: https://primeng.org/table#filter-row

Expected behavior

We would expect no emission of a change by p-dropdown when the already selected option is clicked again in the p-dropdown.