fix(notifications): centralize transaction sent event name

Author: reez

BDKSwiftExampleWallet/Extensions/Notification+Extensions.swift

@@ -8,6 +8,7 @@
 import Foundation
 
 extension Notification.Name {
+    static let transactionSent = Notification.Name("TransactionSent")
     static let walletCreated = Notification.Name("walletCreated")
     static let walletDidUpdate = Notification.Name("walletDidUpdate")
 }

BDKSwiftExampleWallet/View Model/Send/BuildTransactionViewModel.swift

@@ -72,7 +72,7 @@ class BuildTransactionViewModel {
         do {
             try bdkClient.send(address, amount, feeRate)
             NotificationCenter.default.post(
-                name: Notification.Name("TransactionSent"),
+                name: .transactionSent,
                 object: nil
             )
         } catch let error as EsploraError {

BDKSwiftExampleWallet/View Model/Settings/SettingsViewModel.swift

@@ -68,7 +68,7 @@ class SettingsViewModel: ObservableObject {
             try await bdkClient.fullScanWithInspector(inspector)
             DispatchQueue.main.async {
                 NotificationCenter.default.post(
-                    name: Notification.Name("TransactionSent"),
+                    name: .transactionSent,
                     object: nil
                 )
                 self.walletSyncState = .synced

BDKSwiftExampleWallet/View/Send/AddressView.swift

@@ -127,7 +127,7 @@ extension AddressView {
                     alertMessage = "Sweep broadcasted: \(txidText)"
                     isShowingAlert = true
                     NotificationCenter.default.post(
-                        name: Notification.Name("TransactionSent"),
+                        name: .transactionSent,
                         object: nil
                     )
                 }

BDKSwiftExampleWallet/View/WalletView.swift

@@ -88,7 +88,7 @@ struct WalletView: View {
                 }
             }
             .onReceive(
-                NotificationCenter.default.publisher(for: Notification.Name("TransactionSent")),
+                NotificationCenter.default.publisher(for: .transactionSent),
                 perform: { _ in
                     newTransactionSent = true
                 }