LibWeb/SVG: Implement the SVGAElement.referrerPolicy attribute

Author: https://github.com/tcl3
Commit: 31e8189f9f
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/5412
Reviewed-by: https://github.com/gmta ✅
Reviewed-by: https://github.com/shannonbooth

Libraries/LibWeb/SVG/SVGAElement.idl

@@ -1,4 +1,5 @@
 #import <DOM/DOMTokenList.idl>
+#import <Fetch/Request.idl>
 #import <HTML/HTMLHyperlinkElementUtils.idl>
 #import <SVG/SVGURIReference.idl>
 
@@ -14,7 +15,7 @@ interface SVGAElement : SVGGraphicsElement {
     [Reflect] attribute DOMString hreflang;
     [Reflect] attribute DOMString type;
 
-    [FIXME] attribute DOMString referrerPolicy;
+    [Reflect=referrerpolicy, Enumerated=ReferrerPolicy] attribute DOMString referrerPolicy;
 
 };