Merge bitcoin-core/gui#393: Fix regression in "Encrypt Wallet" menu item

d54d949 qt: Fix regression in "Encrypt Wallet" menu item (Hennadii Stepanov)

Pull request description:

  Fix dashpay#392.

  Adding a new item to the `m_wallet_selector` must follow the establishment of a connection between the `WalletView::encryptionStatusChanged` signal and the `BitcoinGUI::updateWalletStatus` slot.

  This was a regression introduced in bitcoin@20e2e24 (dashpay#29).

  ---

  An _encrypted_ wallet being auto-loaded at the GUI startup:
  - on master (eaf09bd)

  ![Screenshot from 2021-08-03 22-38-49](https://user-images.githubusercontent.com/32963518/128075837-cdbb2047-5327-43ea-b2d5-2dcdef67cdc0.png)

  - with this PR

  ![Screenshot from 2021-08-03 22-34-58](https://user-images.githubusercontent.com/32963518/128075572-cb727652-ad44-4b85-bf64-edcd19f9dea1.png)

ACKs for top commit:
  achow101:
    ACK d54d949
  jarolrod:
    ACK d54d949

Tree-SHA512: 669615ec8e1517c2f4cdf59bd11a7c85be793ba0dda112361cf95e6c2f0636215fed331d26a86dc9b779a49defae1b248232f98dab449584376c111c288e87bb

src/qt/bitcoingui.cpp

@@ -923,8 +923,6 @@ void BitcoinGUI::addWallet(WalletModel* walletModel)
     } else if (m_wallet_selector->count() == 1) {
         m_wallet_selector_action->setVisible(true);
     }
-    const QString display_name = walletModel->getDisplayName();
-    m_wallet_selector->addItem(display_name, QVariant::fromValue(walletModel));
 
     connect(wallet_view, &WalletView::outOfSyncWarningClicked, this, &BitcoinGUI::showModalOverlay);
     connect(wallet_view, &WalletView::transactionClicked, this, &BitcoinGUI::gotoHistoryPage);
@@ -937,6 +935,8 @@ void BitcoinGUI::addWallet(WalletModel* walletModel)
     connect(wallet_view, &WalletView::hdEnabledStatusChanged, this, &BitcoinGUI::updateWalletStatus);
     connect(this, &BitcoinGUI::setPrivacy, wallet_view, &WalletView::setPrivacy);
     wallet_view->setPrivacy(isPrivacyModeActivated());
+    const QString display_name = walletModel->getDisplayName();
+    m_wallet_selector->addItem(display_name, QVariant::fromValue(walletModel));
 }
 
 void BitcoinGUI::removeWallet(WalletModel* walletModel)