Add new ESLint rule requiring explicit button types (#36738)

app/javascript/mastodon/components/column_back_button.tsx

@@ -30,7 +30,7 @@ export const ColumnBackButton: React.FC<{ onClick?: OnClickCallback }> = ({
   const handleClick = useHandleClick(onClick);
 
   const component = (
-    <button onClick={handleClick} className='column-back-button'>
+    <button onClick={handleClick} className='column-back-button' type='button'>
       <Icon
         id='chevron-left'
         icon={ArrowBackIcon}