Environment: stage

Url: cluster details page -> machine pool -> edit machine pool dialog

Browser: Chrome

OS: MacOS (could be others)

Priority* Minor

Reproduction steps: 

1. Open a ready ROSA Classic cluster
2. Navigate to Machine pool tab
3. Find the default machine pool and choose edit in the machine pool actions
4. Observe the result

Current Result:

Root disk size units(GiB) are overflowing to another row

Expected Result:

Root disk size units are displayed correctly

Screenshot: