fix(wifi): Fix wrong PMKSA cache entry being used when wifi password is changed

Co-authored-by: yinqingzhao <yinqingzhao@espressif.com>

components/esp_wifi/include/esp_wifi_types_generic.h

@@ -333,7 +333,7 @@ typedef enum {
   * @brief Structure describing parameters for a Wi-Fi fast scan
   */
 typedef struct {
-    int8_t              rssi;             /**< The minimum rssi to accept in the fast scan mode */
+    int8_t              rssi;             /**< The minimum rssi to accept in the fast scan mode. Defaults to -127 if set to >= 0 */
     wifi_auth_mode_t    authmode;         /**< The weakest auth mode to accept in the fast scan mode
                                                Note: In case this value is not set and password is set as per WPA2 standards(password len >= 8), it will be defaulted to WPA2 and device won't connect to deprecated WEP/WPA networks. Please set auth mode threshold as WIFI_AUTH_WEP/WIFI_AUTH_WPA_PSK to connect to WEP/WPA networks */
 } wifi_scan_threshold_t;
@@ -427,7 +427,7 @@ typedef struct {
     wifi_scan_method_t scan_method;           /**< Do all channel scan or fast scan */
     bool bssid_set;                           /**< Whether set MAC address of target AP or not. Generally, station_config.bssid_set needs to be 0; and it needs to be 1 only when users need to check the MAC address of the AP.*/
     uint8_t bssid[6];                         /**< MAC address of target AP*/
-    uint8_t channel;                          /**< Channel of target AP. Set to 1~13 to scan starting from the specified channel before connecting to AP. If the channel of AP is unknown, set it to 0.*/
+    uint8_t channel;                          /**< Channel hint for target AP. Set to 1~13 to scan starting from the specified channel before connecting to AP. Set to 0 for no preference */
     uint16_t listen_interval;                 /**< Listen interval for ESP32 station to receive beacon when WIFI_PS_MAX_MODEM is set. Units: AP beacon intervals. Defaults to 3 if set to 0. */
     wifi_sort_method_t sort_method;           /**< Sort the connect AP in the list by rssi or security mode */
     wifi_scan_threshold_t  threshold;         /**< When scan_threshold is set, only APs which have an auth mode that is more secure than the selected auth mode and a signal stronger than the minimum RSSI will be used. */