[Silabs] Adds fix for scan failure during commissioning flow (#25982)

* Adds changes to default security value when scan fails

* Port changes to SiWx917

* Adds fix for SiWx917

Author: rosahay-silabs

examples/platform/silabs/SiWx917/SiWx917/rsi_if.c

@@ -369,6 +369,13 @@ static void wfx_rsi_save_ap_info()
         /*
          * Scan is done - failed
          */
+#if WIFI_ENABLE_SECURITY_WPA3
+        wfx_rsi.sec.security = WFX_SEC_WPA3;
+#else  /* !WIFI_ENABLE_SECURITY_WPA3 */
+        wfx_rsi.sec.security = WFX_SEC_WPA2;
+#endif /* WIFI_ENABLE_SECURITY_WPA3 */
+        WFX_RSI_LOG("%s: warn: failed with status: %02x", status);
+        return;
     }
     else
     {

examples/platform/silabs/efr32/rs911x/rsi_if.c

@@ -418,6 +418,13 @@ static void wfx_rsi_save_ap_info() // translation
         /*
          * Scan is done - failed
          */
+#if WIFI_ENABLE_SECURITY_WPA3
+        wfx_rsi.sec.security = WFX_SEC_WPA3;
+#else  /* !WIFI_ENABLE_SECURITY_WPA3 */
+        wfx_rsi.sec.security = WFX_SEC_WPA2;
+#endif /* WIFI_ENABLE_SECURITY_WPA3 */
+        WFX_RSI_LOG("%s: warn: failed with status: %02x", status);
+        return;
     }
     else
     {