Fixes #11351: Correct grid class reset on input groups by using attribute...

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

dist/css/bootstrap.css

@@ -3860,7 +3860,7 @@ input[type="button"].btn-block {
   border-collapse: separate;
 }
 
-.input-group.col {
+.input-group[class*="col-"] {
   float: none;
   padding-right: 0;
   padding-left: 0;

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;