Positioning of modal is not working correctly using slot action-row

[T-T-T-Timsen]

Describe the bug
Positioning of modal is not working correctly using slot action-row.
It opens on bottom with action-row out of view instead of opening on top of date field.
Please beware, if its open and window is resized it works correctly. This happens only on initial open!
Didn't test this for sidebars with content higher than calendar. But maybe here will be the same issue.

To Reproduce
Just use slot example with action-row of official website and prepare window height to be a little higher than calendar modal:
https://vue3datepicker.com/slots/content/#action-buttons
I made a screenshot with action-row out of view.

Expected behavior
Should open modal on top instead on bottom.

Screenshots

Desktop & mobile (please complete the following information):

• Browser Chrome
• Library version 8.6.0