Add WIFI_REASON_CONNECTION_FAIL in WiFiGeneric.cpp (#3529)

`WIFI_REASON_CONNECTION_FAIL` has been added to `wifi_err_reason_t` some time ago:  
https://github.com/espressif/arduino-esp32/blob/cec3fca4ad4a39feb463f9298ab3238819732d50/tools/sdk/include/esp32/esp_wifi_types.h#L95

But it was still missing from `system_event_reasons` in `WiFiGeneric.cpp` sometimes causing panics here:  
https://github.com/espressif/arduino-esp32/blob/cec3fca4ad4a39feb463f9298ab3238819732d50/libraries/WiFi/src/WiFiGeneric.cpp#L348

Author: felixstorm-c4a8

Diff for: libraries/WiFi/src/WiFiGeneric.cpp

@@ -323,7 +323,7 @@ void WiFiGenericClass::removeEvent(wifi_event_id_t id)
 const char * system_event_names[] = { "WIFI_READY", "SCAN_DONE", "STA_START", "STA_STOP", "STA_CONNECTED", "STA_DISCONNECTED", "STA_AUTHMODE_CHANGE", "STA_GOT_IP", "STA_LOST_IP", "STA_WPS_ER_SUCCESS", "STA_WPS_ER_FAILED", "STA_WPS_ER_TIMEOUT", "STA_WPS_ER_PIN", "STA_WPS_ER_PBC_OVERLAP", "AP_START", "AP_STOP", "AP_STACONNECTED", "AP_STADISCONNECTED", "AP_STAIPASSIGNED", "AP_PROBEREQRECVED", "GOT_IP6", "ETH_START", "ETH_STOP", "ETH_CONNECTED", "ETH_DISCONNECTED", "ETH_GOT_IP", "MAX"};
 #endif
 #if ARDUHAL_LOG_LEVEL >= ARDUHAL_LOG_LEVEL_WARN
-const char * system_event_reasons[] = { "UNSPECIFIED", "AUTH_EXPIRE", "AUTH_LEAVE", "ASSOC_EXPIRE", "ASSOC_TOOMANY", "NOT_AUTHED", "NOT_ASSOCED", "ASSOC_LEAVE", "ASSOC_NOT_AUTHED", "DISASSOC_PWRCAP_BAD", "DISASSOC_SUPCHAN_BAD", "UNSPECIFIED", "IE_INVALID", "MIC_FAILURE", "4WAY_HANDSHAKE_TIMEOUT", "GROUP_KEY_UPDATE_TIMEOUT", "IE_IN_4WAY_DIFFERS", "GROUP_CIPHER_INVALID", "PAIRWISE_CIPHER_INVALID", "AKMP_INVALID", "UNSUPP_RSN_IE_VERSION", "INVALID_RSN_IE_CAP", "802_1X_AUTH_FAILED", "CIPHER_SUITE_REJECTED", "BEACON_TIMEOUT", "NO_AP_FOUND", "AUTH_FAIL", "ASSOC_FAIL", "HANDSHAKE_TIMEOUT" };
+const char * system_event_reasons[] = { "UNSPECIFIED", "AUTH_EXPIRE", "AUTH_LEAVE", "ASSOC_EXPIRE", "ASSOC_TOOMANY", "NOT_AUTHED", "NOT_ASSOCED", "ASSOC_LEAVE", "ASSOC_NOT_AUTHED", "DISASSOC_PWRCAP_BAD", "DISASSOC_SUPCHAN_BAD", "UNSPECIFIED", "IE_INVALID", "MIC_FAILURE", "4WAY_HANDSHAKE_TIMEOUT", "GROUP_KEY_UPDATE_TIMEOUT", "IE_IN_4WAY_DIFFERS", "GROUP_CIPHER_INVALID", "PAIRWISE_CIPHER_INVALID", "AKMP_INVALID", "UNSUPP_RSN_IE_VERSION", "INVALID_RSN_IE_CAP", "802_1X_AUTH_FAILED", "CIPHER_SUITE_REJECTED", "BEACON_TIMEOUT", "NO_AP_FOUND", "AUTH_FAIL", "ASSOC_FAIL", "HANDSHAKE_TIMEOUT", "CONNECTION_FAIL" };
 #define reason2str(r) ((r>176)?system_event_reasons[r-176]:system_event_reasons[r-1])
 #endif
 esp_err_t WiFiGenericClass::_eventCallback(void *arg, system_event_t *event)