1) Ignore immediate assoc req received from the station while we are
processing the older one
2) Create station mutex (sta->lock) only for stations connecting with wpa3
security
3) Fix regression caused by 4cb4faa9
1) Set NVS PMF required true if not specified by application when
authmode is WPA3
2) Fix issue regarding cleanup of non associated sta_info
3) Fix implementation of sta lock to avoid concurrency issues
4) Fix softAP deinit crash when password is configured with max length
