Components: Dropdown, AutoComplete, Listbox -virtualScroll UI issue

[petrov-ana]

Describe the bug

In version 17.18.13, Basic dropdown, autocomplete, listbox work properly but if add [virtualScroll]="true" [virtualScrollItemSize]="38" then options not showing in expand panel. This issue is on primeNg offical website too. In version 17.18.12 there is no such problem

Environment

"@angular/common": "^17.3.0",
"primeng": "^17.18.13",

Reproducer

No response

Angular version

17.3.7

PrimeNG version

17.18.13

Build / Runtime

Angular CLI App

Language

TypeScript

Node version (for AoT issues node --version)

18.18.2

Browser(s)

Chrome 129.0.6668.71, Firefox 133.0.3

Steps to reproduce the behavior

1. Add p-dropdown or p-autocomplte or p-listbox with virtualScroll
2. On click of that expand panel is not visible properly.

Expected behavior

After click on dropdown or p-autocomplte with virtualScroll it should get expand properly for select options

[LoaderB0T]

Not sure if really related, but we also have an issue with virtual scrolling in the table control since v 17.18.13.
The "contentEl" in the scroller gets set initially to a div.p-scroller-content, which gets removed from the DOM afterwarts...
Results in a calculation of 0 visible items. So it might be related to this bug here.

[mertsincan]

Fixed in #17039