fix: 键盘控制按下时样式缺少

src/components/MMCFlightControlCenter/components/uavApplications/components/controlPanel/components/controlBottom/components/keyControl/index.vue

@@ -212,9 +212,11 @@ export default {
       let data = null;
       let num = 0;
       document.addEventListener("keydown", (event) => {
+        this.keycode = event.key;
         this.clickControl(event);
       });
       document.addEventListener("keyup", (event) => {
+        this.keycode = '';
         this.stopGimbal();
       });
     },