TimelineQueueButtonHeader: add whitespace-nowrap

app/soapbox/components/timeline_queue_button_header.js

@@ -103,7 +103,7 @@ class TimelineQueueButtonHeader extends React.PureComponent {
 
     return (
       <div className={classes}>
-        <a className='flex items-center bg-primary-600 hover:bg-primary-700 hover:scale-105 active:scale-100 transition-transform text-white rounded-full px-4 py-2 space-x-1.5 cursor-pointer' onClick={this.handleClick}>
+        <a className='flex items-center bg-primary-600 hover:bg-primary-700 hover:scale-105 active:scale-100 transition-transform text-white rounded-full px-4 py-2 space-x-1.5 cursor-pointer whitespace-nowrap' onClick={this.handleClick}>
           <Icon src={require('@tabler/icons/icons/arrow-bar-to-up.svg')} />
 
           {(count > 0) && (