Use strip tags in sanitize_text over deprecated FILTER_SANITIZE_STRING

src/MD_STD_IN.php

@@ -73,13 +73,12 @@ public static function sanitize_id_or_zero(mixed $input):int {
      */
     public static function sanitize_text(mixed $input):string {
 
-        $output = \filter_var($input,
+        $output = \filter_var($input, FILTER_UNSAFE_RAW);
-            FILTER_SANITIZE_STRING,
-            FILTER_FLAG_NO_ENCODE_QUOTES);
 
         if ($output === false) {
             return "";
         }
+        $output = strip_tags($output);
         while (strpos($output, "  ") !== false) {
             $output = str_replace("  ", " ", $output);
         }