message: qt: Improve comments in WalletController::getOrCreateWallet()
diff: @@ -128,8 +128,14 @@ WalletModel* WalletController::getOrCreateWallet(std::unique_ptr<interfaces::Wal
  }
  // Instantiate model and register it.
  - WalletModel* wallet_model = new WalletModel(std::move(wallet), m_client_model, m_platform_style, nullptr);
  - // Handler callback runs in a different thread so fix wallet model thread affinity.
  + WalletModel* wallet_model = new WalletModel(std::move(wallet), m_client_model, m_platform_style,
  + nullptr /* required for the following moveToThread() call */);
  +
  + // Move WalletModel object to the thread that created the WalletController
  + // object (GUI main thread), instead of the current thread, which could be
  + // an outside wallet thread or RPC thread sending a LoadWallet notification.
  + // This ensures queued signals sent to the WalletModel object will be
  + // handled on the GUI event loop.
  wallet_model->moveToThread(thread());
  // setParent(parent) must be called in the thread which created the parent object. More details in #18948.
  GUIUtil::ObjectInvoke(this, [wallet_model, this] {
  @@ -161,7 +167,6 @@ WalletModel* WalletController::getOrCreateWallet(std::unique_ptr<interfaces::Wal
  // Re-emit coinsSent signal from wallet model.
  connect(wallet_model, &WalletModel::coinsSent, this, &WalletController::coinsSent);
  - // Notify walletAdded signal on the GUI thread.
  Q_EMIT walletAdded(wallet_model);
  return wallet_model;
  