LibWeb: Don't print JavaScript syntax error hints

This uses the new flag in print_errors to not print hints. This
decreases the load time of JavaScript heavy webpages with many errors
significantly.

Userland/Libraries/LibWeb/DOM/Document.cpp

@@ -673,7 +673,7 @@ JS::Value Document::run_javascript(const StringView& source, const StringView& f
  auto parser = JS::Parser(JS::Lexer(source, filename));
  auto program = parser.parse_program();
  if (parser.has_errors()) {
- parser.print_errors();
+ parser.print_errors(false);
  return JS::js_undefined();
  }
  auto& interpreter = document().interpreter();