Steps:

1. Create site with long name.
2. Go go Content structure.
3. Verify site dropdown.

Actual result: Full site name is displayed.

Expected result: Display up to 24 letters, then '...', tooltip on hover with full name. See https://www.figma.com/file/e2G3D6kwy6khoDXlqIxxbq/Smart%2FExpert-mode-%26-site-context?node-id=3524%3A292567&mode=dev