spell; prefer AppDisplayName; use C++20 designated init

.github/actions/spelling/expect/expect.txt

@@ -1135,9 +1135,7 @@ NOSIZE
 NOSNAPSHOT
 NOTHOUSANDS
 NOTICKS
-notifArgs
-notifBody
-notifTitle
+notif
 NOTIMEOUTIFNOTHUNG
 NOTIMPL
 NOTOPMOST

src/cascadia/TerminalApp/Resources/en-US/Resources.resw

@@ -739,10 +739,6 @@
     <value>Windows</value>
     <comment>This is displayed as a label for the context menu item that holds the submenu of available windows.</comment>
   </data>
-  <data name="NotificationTitle" xml:space="preserve">
-    <value>Windows Terminal</value>
-    <comment>Title shown in desktop toast notifications sent by the terminal.</comment>
-  </data>
   <data name="NotificationMessage_TabActivity" xml:space="preserve">
     <value>Activity in tab "{0}"</value>
     <comment>{0} is the tab title. Shown as the body of a desktop notification when tab activity is detected.</comment>

src/cascadia/TerminalApp/TabManagement.cpp

@@ -1230,13 +1230,14 @@ namespace winrt::TerminalApp::implementation
             {
                 message = RS_fmt(L"NotificationMessage_TabActivity", std::wstring_view{ tabTitle });
             }
-            notificationTitle = RS_(L"NotificationTitle");
+            notificationTitle = CascadiaSettings::ApplicationDisplayName();
         }
 
-        implementation::DesktopNotificationArgs args;
-        args.Title = notificationTitle;
-        args.Message = message;
-        args.TabIndex = tabIndex;
+        const implementation::DesktopNotificationArgs args{
+            .Title = notificationTitle,
+            .Message = message,
+            .TabIndex = tabIndex,
+        };
 
         implementation::DesktopNotification::SendNotification(args, [weakThis{ get_weak() }](uint32_t idx) {
             if (const auto page{ weakThis.get() })