clippy: Fix redundant field names warnings (#31793)

components/script/task_source/dom_manipulation.rs

@@ -61,10 +61,10 @@ impl DOMManipulationTaskSource {
     ) {
         let target = Trusted::new(target);
         let task = EventTask {
-            target: target,
-            name: name,
-            bubbles: bubbles,
-            cancelable: cancelable,
+            target,
+            name,
+            bubbles,
+            cancelable,
         };
         let _ = self.queue(task, window.upcast());
     }