Auto merge of #20115 - janvi-palan:NoNetworkConnForHtmlListMedia, r=emilio

Dont make a network request when the media attribute of a link element is modified

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- [X] These changes fix #16404 (github issue number if applicable).

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components/script/dom/htmllinkelement.rs

@@ -194,13 +194,6 @@ impl VirtualMethods for HTMLLinkElement {
                     }
                 }
             },
-            &local_name!("media") => {
-                if string_is_stylesheet(&rel) {
-                    if let Some(href) = self.upcast::<Element>().get_attribute(&ns!(), &local_name!("href")) {
-                        self.handle_stylesheet_url(&href.value());
-                    }
-                }
-            },
             _ => {},
         }
     }