AutoComplete: Unique option doesn't work

[evaldasu]

Describe the bug

Unique option, which is set to true by default, in multiple mode doesn't seem to work at all. I've recently upgraded the code base from Angular 13 to 17 and noticed it that it allows duplicate values to be added. I've noticed this same behavior in your example section as well.

Environment

Reproducer

No response

Angular version

17.0.8

PrimeNG version

17.3.0

Build / Runtime

Angular CLI App

Language

TypeScript

Node version (for AoT issues node --version)

20.10.0

Browser(s)

Firefox, Chrome

Steps to reproduce the behavior

1. Navigate to Autocomplete example page
2. Try entering any same value multiple times:
   
   

Expected behavior

I expect that unique config, which is by default set to true, won't allow duplicate values to be added.