fix member video jump

Signed-off-by: bggRGjQaUbCoE <githubaccount56556@proton.me>

lib/pages/member_video/controller.dart

@@ -106,6 +106,7 @@ class MemberVideoCtr
     }
     firstAid = data.item?.firstOrNull?.param;
     lastAid = data.item?.lastOrNull?.param;
+    isLoadPrevious = false;
     loadingState.value = Success(data.item);
     return true;
   }