p-dropdown keyboard navigation

[macedo8]

Describe the bug

Navigate to p-dropdown using keyboard tab key
Press space key or enter key to open dropdown
Then press up/down arrow keys
Observe the drop down value. It is not getting selected with arrow key navigation. User has to press enter key to select the highlighted value.

With filter, dont select anything
https://vimeo.com/1060836306

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://www.primefaces.org/primeng-v14-lts/dropdown

Environment

Development

Angular version

17.3.1

PrimeNG version

v17 (LTS Only)

Node version

18.20.7

Browser(s)

No response

Steps to reproduce the behavior

Navigate to p-dropdown using keyboard tab key
Press space key or enter key to open dropdown
Then press up/down arrow keys
Observe the drop down value. It is not getting selected with arrow key navigation. User has to press enter key to select the highlighted value.

Expected behavior

Drop down value should get selected while navigating with up/down arrow keys as in previous version - 15 along with enter key and spacebar key.