Navbar's search/language/login buttons might wrap on medium screens

[AndreaBarbasso]

Describe the bug

If the navbar contains more items than the ones found by default, the search/language/login buttons container wraps in a new row on medium screens.

To Reproduce

Steps to reproduce the behavior:

1. On sandbox.dspace.org, in any page, duplicate a navbar element with devtools;
2. Resize the page in order to decrease its width.

If you reproduce the bug on the home page, the buttons container still wraps and hides behind the ds-home-news component.

Here is a video to showcase the bug:

wrapping-navbar.mp4

Expected behavior

The navbar should not wrap: the text content of the navbar menu items should break on another line instead.