Clear cache after enabling client-side LESS compilation so settings take effect

compose/bin/setup-grunt

@@ -65,3 +65,4 @@ bin/grunt less:$THEME
 
 echo "Enabling client-side LESS compilation mode for development..."
 bin/clinotty bin/magento config:set dev/front_end_development_workflow/type client_side_compilation
+bin/clinotty bin/magento cache:clean