Keep Enable Lightning toggle visible after disabling it (#3702)

cw_bitcoin/lib/bitcoin_wallet.dart

@@ -160,9 +160,11 @@ abstract class BitcoinWalletBase extends ElectrumWallet with Store {
             lnurlDomain: "cake.cash",
             cachedAddress: cachedLightningAddress,
           );
+          walletAddresses.lightningWallet = lightningWallet;
           walletAddresses.setLightningAddress(walletInfo.name);
         }
       } else {
+        lightningWallet?.close();
         lightningWallet = null;
       }
     });
@@ -426,7 +428,7 @@ abstract class BitcoinWalletBase extends ElectrumWallet with Store {
   bool get hasPayjoinSupport => keys.privateKey.isNotEmpty;
 
   @override
-  bool get hasLightningSupport => lightningWallet?.sdk != null;
+  bool get hasLightningSupport => seed != null && LightningWallet.isAvailable;
 
   bool get isPayjoinAvailable => unspentCoinsInfo.values
       .where((element) => element.walletId == id && element.isSending && !element.isFrozen)
@@ -727,7 +729,7 @@ abstract class BitcoinWalletBase extends ElectrumWallet with Store {
 
     if (option == BitcoinReceivePageOption.lightning) {
       // Lightning is tied to the primary account only
-      return !isExtraAccount && hasLightningSupport;
+      return !isExtraAccount && hasLightningSupport && isLightningInitialized;
     }
 
     if (option == BitcoinReceivePageOption.silent_payments) {

cw_bitcoin/lib/electrum_wallet_addresses.dart

@@ -171,7 +171,7 @@ abstract class ElectrumWalletAddressesBase extends WalletAddresses with Store {
   final Bip32Slip10Secp256k1 legacyMainHd;
   final Bip32Slip10Secp256k1 legacySideHd;
   final bool isHardwareWallet;
-  final LightningWallet? lightningWallet;
+  LightningWallet? lightningWallet;
 
   @observable
   ObservableMap<BitcoinAddressType, String> lockedReceiveAddressByType;