Software updates 1.2.4

1.2.4 The optimization is as follows:
1. Adjust the socket-related functions, only support switches, no longer support association.
2. When the Watch App is running and the mobile App switches families, the Watch App realizes the data synchronization update function.
3. When the Watch App is not online, after the mobile App switches families, when the Watch App re-runs, the data synchronization update function is realized.