fix(legacy-mcu1): preserve Bluetooth patches for product 0x8820

Keep the product-specific syscfg writes and restore all patch uploads, including patch configuration. Derive the syscfg condition from the current product readback without retaining a loader flag.

Update regression checks for full patch uploads on both products and syscfg write failures, and document the reported hardware results and remaining validation.

drivers/aic8800/aic8800_fdrv/rwnx_main.c

@@ -3207,9 +3207,8 @@ static int rwnx_cfg80211_connect(struct wiphy *wiphy, struct net_device *dev,
 		(int)atomic_read(&rwnx_vif->drv_conn_state) == (int)RWNX_DRV_STATUS_CONNECTING) {
 		AICWFDBG(LOGERROR, "%s driver is disconnecting or connecting ,return it \r\n", __func__);
 		/*
-		 * Returning 0 here leaves cfg80211 waiting for a connect
-		 * result that never comes, so every later connect fails with -EALREADY
-		 * (NetworkManager then loops asking for the password forever).
+		 * Returning 0 would accept this request without submitting it to
+		 * the firmware or providing its own connect result.
 		 * Reject the new request without changing an in-flight operation's state.
 		 */
 		return -EBUSY;