Dropdown: invalid text after cleaning via ngModel

[dbelob]

Describe the bug

Text is not displayed correctly if you use the selectedItem template and clear the selected value via ngModel.

Environment

OS: Windows 8.1, Windows 10

Reproducer

https://stackblitz.com/github/dbelob/primeng-dropdown-clear-error

Angular version

17.1.3

PrimeNG version

17.6.0

Build / Runtime

Angular CLI App

Language

TypeScript

Node version (for AoT issues node --version)

v20.11.0

Browser(s)

Chrome 120.0.6099.71, Firefox 120.0.1, Edge 120.0.2210.61

Steps to reproduce the behavior

1. Select country from left dropdown (for example, 'Australia')
2. Select city from right dropdown (for example, 'Sydney')
3. Click Clear button: right dropdown will contain incorrect text ('Select a City' and 'Sydney')

The error is reproduced with static and dynamic value in the placeholder.

Expected behavior

After clicking Clear button the correct text should be 'Select a City'.