Tree | onKeydown is broken with contextMenu

[MosheSchnitzler]

Describe the bug

When binding the ContextMenu component to the Tree component by passing the ContextMenu's template variable into the Tree's contextMenu property as described in the docs, and then trying to move around the focus on the tree items with arrows up/down, I get the error Cannot read properties of undefined (reading 'nativeElement').

Here is a link to the line of code where the crash happens.

Environment

I was able to reproduce the error on PrimeNg's documentation page

Reproducer

No response

Angular version

16.2.0

PrimeNG version

16.2.0

Build / Runtime

Angular CLI App

Language

TypeScript

Node version (for AoT issues node --version)

18.10.0

Browser(s)

Chrome 116.0.5845.111

Steps to reproduce the behavior

1. Simply head over to https://primeng.org/tree#contextmenu
2. In the section where the documentation describes how to use Tree with ContextMenu, click on one of the tree items to make them focused. Make sure you click on the TreeItem, and not on the expand icon.
3. Open the devtools > console - so you can watch for the error.
4. Try to navigate up and down with the keyboard arrows. The error should pop up, and the focus won't move

Expected behavior

The tree item's focus should move around on the Tree component from tree item to tree item when using the up/down arrow keys.