MultiSelectComboBox: selection list does not open to the top

[MarkusGemeinhardt]

Description

Unlike the ComboBox, the selection list of the MultiSelectComboBox always folds out downwards at the bottom of the browser. This happens until the distance is smaller than the height of a single list entry. Compare this with the behaviour on the documentation page at vaadin documentation MultiSelectComboBox

Expected outcome

If there is not enough space for a list of at least 5 entries, the selection list must expand upwards, as with the ComboBox.

Minimal reproducible example

Example:
https://vaadin.com/docs/latest/components/multi-select-combo-box

Steps to reproduce

1. Scroll a MultiSelectComboBox near the bottom of the browser
2. Open the selection list - it always opens down

Environment

Vaadin version(s): V23+

Browsers

Issue is not browser related

[yuriy-fix]

Let's verify that the latest overlay positioning fix is applied correctly.

[sissbruecker]

There was a fix for this for combo box recently, it looks like this needs to be applied to MSCB as well: vaadin/web-components#5432

[sissbruecker]

Applied the same fix to MSCB in v24.

In v23 the previous fix should also apply to MSCB, and I could not reproduce the issue with v23.3.12.