LibWeb: Port URL and URLSearchParams to new String

Author: https://github.com/kennethmyhra
Commit: 9da09e4fd3
Pull-request: https://github.com/SerenityOS/serenity/pull/17686
Reviewed-by: https://github.com/linusg

Userland/Libraries/LibWeb/HTML/HTMLInputElement.h

@@ -139,7 +139,7 @@ private:
 
     static TypeAttributeState parse_type_attribute(StringView);
     void create_shadow_tree_if_needed();
-    void run_input_activation_behavior();
+    ErrorOr<void> run_input_activation_behavior();
     void set_checked_within_group();
 
     // https://html.spec.whatwg.org/multipage/input.html#value-sanitization-algorithm