Popup: misalignment when the trigger button is in the right corner

[itismohammadreza]

Describe the bug

When the trigger button for the popup component is placed in the right corner of the screen, the popup's triangle (caret) does not align correctly with the button.

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/twjffqjr?file=src%2Fapp%2Fimports.ts,src%2Fapp%2Fpopover-basic-demo.html

Environment

windows

Angular version

19.0.0

PrimeNG version

v19

Node version

No response

Browser(s)

No response

Steps to reproduce the behavior

1. Place the popup trigger button at the right corner of the screen.
2. Click on the button to open the popup.
3. Observe the position of the caret in relation to the button.

Expected behavior

The triangle should remain perfectly aligned with the centre of the button, regardless of its position on the screen.

[rosenthalj]

Is this a duplicate issue to "Component Popover pointing at wrong area" #16406