LibWeb: Add HTMLPreElement width property

Author: https://github.com/bplaat
Commit: 089a98607c
Pull-request: https://github.com/SerenityOS/serenity/pull/23261
Reviewed-by: https://github.com/ADKaster ✅

Userland/Libraries/LibWeb/HTML/HTMLPreElement.idl

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