Remove set info icon from tab order.

Also add a small padding around the info icon to make it easier to
click on a touch screen ensuring it has enough space from the set link.

Author: somiaj

templates/ContentGenerator/ProblemSets/set_list_row.html.ep

@@ -20,7 +20,7 @@
 				class => 'fw-bold'
 			=%>
 			% if ($set->description =~ /\S/) {
-				<a class="set-id-tooltip" role="button" tabindex="0" data-bs-placement="right"
+				<a class="p-1 set-id-tooltip" role="button" tabindex="-1" data-bs-placement="right"
 						data-bs-toggle="tooltip" data-bs-title="<%= $set->description =%>"
 						data-fallback-placements="top bottom">
 					<i class="icon fas fa-circle-info" aria-hidden="true"></i>