1. Fix memory leak caused by assoc IE and retry timer
2. Discard commit frame received at confirmed state in SAE
3. Ignore immediate assoc req received from the station while we are
processing the older one. Fix regression caused by 4cb4faa9
Executing supplicant WIFI_EVENT_STA_CONNECTED and WIFI_EVENT_STA_DISCONNECTED handlers in event-handler context can lead to concurrency issues.
Moving the functionality into 'wpa_sta_connected_cb' and 'wpa_sta_disconnected_cb' callbacks and execute in ppTask context.