Dropdown: Placeholder magic cannot be disabled

[LoaderB0T]

Describe the bug

Recently a PR was merged to automatically set the placeholder of a dropdown to its floatlabel to prevent empty dropdowns. Issue: #14954 PR: #15383

For our use case, we do not want a placeholder. If the dropdown is empty, it should be empty. The new behavior is neither opt-in nor opt-out which is a problem for us.

I need a solution to prevent the placeholder from being set automatically. By the way, the current solution would override a custom placeholder explicitly set by the user. Not ideal!

Environment

PrimeNG 17.18.3
Angular 17.3.9

Reproducer

No response

Angular version

17.3.9

PrimeNG version

17.18.3

Build / Runtime

Angular CLI App

Language

TypeScript

Node version (for AoT issues node --version)

20.9.0

Browser(s)

No response

Steps to reproduce the behavior

No response

Expected behavior

No response