fix(consumers): move full-width utility to call site to avoid registry drift

The pagination full-width fix edited the vendored list-layout registry
component in-place, which the UI audit flags as locally-modified drift.
Revert list-layout to its released bytes and apply [&>*]:w-full via
className at the ListLayoutPagination call site instead — same render,
no registry drift.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: jvorcak

frontend/src/components/pages/consumers/group-list.tsx

@@ -348,7 +348,7 @@ const GroupList: FC = () => {
         <TableBody>{renderBody()}</TableBody>
       </Table>
 
-      <ListLayoutPagination>
+      <ListLayoutPagination className="[&>*]:w-full">
         <DataTablePagination table={table} />
       </ListLayoutPagination>
     </ListLayout>

frontend/src/components/redpanda-ui/components/list-layout.tsx

@@ -169,10 +169,7 @@ interface ListLayoutPaginationProps extends React.HTMLAttributes<HTMLDivElement>
 const ListLayoutPagination = React.forwardRef<HTMLDivElement, ListLayoutPaginationProps>(
   ({ className, children, ...props }, ref) => (
     <div
-      className={cn(
-        'flex flex-col gap-4 sm:flex-row sm:items-center sm:justify-between [&>*]:w-full',
-        className
-      )}
+      className={cn('flex flex-col gap-4 sm:flex-row sm:items-center sm:justify-between', className)}
       ref={ref}
       {...props}
     >