fix: select scorll in mobile (#3707)

components/vc-virtual-list/hooks/useMobileTouchMove.ts

@@ -1,5 +1,5 @@
 import supportsPassive from '../../_util/supportsPassive';
-import { watch, Ref } from 'vue';
+import { watch, Ref, onMounted } from 'vue';
 
 const SMOOTH_PTG = 14 / 15;
 
@@ -80,7 +80,10 @@ export default function useMobileTouchMove(
     }
   };
 
-  watch(inVirtual, val => {
+  onMounted(() => {
+    watch(
+      inVirtual,
+      val => {
         listRef.value.removeEventListener(
           'touchstart',
           onTouchStart,
@@ -103,5 +106,8 @@ export default function useMobileTouchMove(
               : false,
           );
         }
+      },
+      { immediate: true },
+    );
   });
 }