feat: Restore commify() function

library/includes/functions.php

@@ -568,6 +568,14 @@ function url_arg($url, $arg, $value, $amp = '&')
     return $url . $anchor;
 }
 
+/**
+ * Adds commas between every group of thousands
+ */
+function commify($number): string
+{
+    return number_format($number);
+}
+
 /**
  * Returns a size formatted in a more human-friendly format, rounded to the nearest GB, MB, KB..
  */