Popover component placement works only for auto

## Description

The Popover component has a positioning issue where only the 'auto' placement option works as expected. When using any other placement values (top, bottom, left, right), the popover incorrectly appears in the top-left corner of the viewport instead of the intended position relative to the trigger element.

## Steps to Reproduce

Setup Popover component with a trigger element
Set the placement prop to any value other than 'auto' (e.g., 'bottom', 'top', 'right', 'left')
Click the trigger to show the popover
Observe that the popover appears in the top-left corner instead of the intended position

## Expected Behavior

Popover should appear in the specified position relative to its trigger element

## Actual Behavior

Only 'auto' placement works correctly
All other placement options cause the popover to appear at coordinates (0,0) in the top-left corner