[UI11] Label for "Multiple choices" or "Checkbox" are extra tall than other types of variable.

Build information:
Build name: Helsinki
Build date: 03-22-2017_2340
Build tag: glide-helsinki-03-16-2016__patch9-hotfix0a-03-17-2017

Issue Description:
This only happens for UI11 on Helsinki.
UI11 on Fuji seems fine.

This is only cosmetic issue.

 

1. Log in as maint
2. Find any catalog item
3. Add a single text line variable to the catalog item, order 50
4. Add a multiple choices variable to the catalog item, order 100 
5. Add Label variable to the catalog item, order 200.
6. Add some checkbox variables, order them as 210, 220 ... 290.
7. Under the item, click try it.
8. Wwitch to UI11 by opening the following URL in a new tab on the same browser
   https://<yourinstance>.service-now.com/navpage.do?sysparm_device=browser
9. Refresh the tab for the catalog item.
   
   Expected behavior
   All the labels have the same/similar height.
   
   Actual behavior
   Label for Multiple choices or Checkbox are extra tall (see screenshot)

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