implement Default trait, remove Clone derive

src/app/browser/window/tab/item/page/client/request/feature.rs

@@ -3,7 +3,6 @@ const DOWNLOAD: &str = "download:";
 const SOURCE: &str = "source:";
 
 /// Feature wrapper for client `Request`
-#[derive(Clone)]
 pub enum Feature {
     Default,
     Download,
@@ -38,3 +37,9 @@ impl Feature {
         }
     }
 }
+
+impl Default for Feature {
+    fn default() -> Self {
+        Feature::Default
+    }
+}