Fix oval loading spinners on search page
Created by: pdubroy
Fix #22287 (closed) - oval landing spinners on sourcegraph.com/search. Seems to be caused by the smaller size for inline icons in the redesign, interacting with margin on the loading spinner itself.
Putting icon-inline
on the LoadingSpinner
itself fixes the problem and seems to be the common way that we use the loading spinner (see here).
New behavior
https://user-images.githubusercontent.com/17293/123288334-c4540b00-d50f-11eb-971a-398aa1af3388.mp4