Tree: onNodeClick event replaces the inline style of the component child nodes

[aimanicose]

Describe the bug

When using PrimeNG Tree component, custom styles provided in the TreeNode's style property are being overridden when the node is clicked/selected.

This is due to an override of the li tag on nodeClick event :

before click :

after click :

Pull Request Link

No response

Reason for not contributing a PR

• Lack of time
• Unsure how to implement the fix/feature
• Difficulty understanding the codebase
• Other

Other Reason

No response

Reproducer

https://stackblitz.com/edit/stackblitz-starters-6kwlw3uc?file=src%2Fmain.ts

Environment

Production

Angular version

19.0.1

PrimeNG version

v19

Node version

No response

Browser(s)

No response

Steps to reproduce the behavior

1. Create a TreeNode array with custom inline style for nodes style: { 'border': '1px solid red' }
2. Pass the array to p-tree component
3. p-tree must be selectionMode="single"
4. Click on a node

Expected behavior

The custom styles defined in the TreeNode's style property should persist after node selection/click