LibWeb: Use [Reflect] to implement HTMLPreElement.width

Author: https://github.com/tcl3
Commit: 58bb5e1f7a
Pull-request: https://github.com/SerenityOS/serenity/pull/24402
Reviewed-by: https://github.com/mattco98

Userland/Libraries/LibWeb/HTML/HTMLPreElement.idl

@@ -7,6 +7,6 @@ interface HTMLPreElement : HTMLElement {
     [HTMLConstructor] constructor();
 
     // Obsolete
-    [CEReactions] attribute long width;
+    [CEReactions, Reflect] attribute long width;
 
 };