fix: multiselectMenu and Multiselect height

[kKaskak]

• The height of the Multiselect and MultiselectMenu was not calculated properly.

• After fixing the problem with the pop-up overflow some time ago a new problem is getting fixed here with dropdowns inside pop-ups on being visible (another time overflow issue) i propose we move away from popups completely in the future

• Changes introduced:

1. We set the height only globally for the component and try not to set it locally for each case.
2. We use @media (orientation: landscape) and (max-width: @xsmall) to set the size for smaller landscape devices (there are no devices that are vertical and are smaller than calc(3.2rem * 7))
3. Overflow issue on popups having dropdowns resolved.

• Future notes:

1. Move completely to using MultiselectMenu component instead of the old MultiSelect

Now

Before