Fixes #11351: Correct grid class reset on input groups by using attribute selector, not an old class from v3 betas

less/input-groups.less

@@ -10,7 +10,7 @@
   border-collapse: separate; // prevent input groups from inheriting border styles from table cells when placed within a table
 
   // Undo padding and float of grid classes
-  &.col {
+  &[class*="col-"] {
     float: none;
     padding-left: 0;
     padding-right: 0;