scss/infobox: widen metric column for throughput strings

Accommodate wider display strings such as "120 Mbit/s" that replaced
the previous "95%" TQ percentages on Batman V links.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: grische

scss/modules/_infobox.scss

@@ -22,6 +22,10 @@
 
     th,
     td {
+      &:nth-child(2) {
+        width: 42%;
+      }
+
       &:nth-child(3),
       &:nth-child(5) {
         width: 12%;