optimize MatCard

src/ui/Duel/PlayMat/Card/index.module.scss

@@ -23,7 +23,7 @@
       position: absolute;
       left: 0;
       top: 0;
-      border-radius: 2px;
+      // border-radius: 2px; // 这里好像会导致卡片分辨率降低
       overflow: hidden;
     }
     .cover {

src/ui/Duel/PlayMat/Card/index.tsx

@@ -93,7 +93,6 @@ export const Card: React.FC<{ idx: number }> = React.memo(({ idx }) => {
 
     register(Task.Focus, async () => {
       setClassFocus(true);
-      setTimeout(() => setClassFocus(false), 1000); // TODO: 这儿为啥要这么写呢
       await focus({ card, api });
     });