Merge #9592: [Qt] Add checkbox in the GUI to opt-in to RBF when creating a transaction

c4e4792 [Qt] Change RBF checkbox to reflect -walletrbf setting (Russell Yanofsky)
838a58e [Qt] Add simple optin-RBF checkbox and confirmation info (Jonas Schnelli)
568c05a Allow to opt-into RBF when creating a transaction (Jonas Schnelli)

Tree-SHA512: 3d52dcd4e44da8aed4d631748074afef78d38c860f2a8b95323f4801a989d6599a3498a753fc10daba4098c527ef5a0eb942e5b3f1bfd656e1a6bd272b8e6c57

src/qt/walletmodel.cpp

@@ -706,3 +706,8 @@ int WalletModel::getDefaultConfirmTarget() const
 {
     return nTxConfirmTarget;
 }
+
+bool WalletModel::getDefaultWalletRbf() const
+{
+    return fWalletRbf;
+}