add macOS igonre, fix macOS notifyIcon

System.Application.SteamTools.Client.Desktop.Linux/Application/Services/Implementation/LinuxDesktopPlatformServiceImpl.cs

@@ -14,9 +14,12 @@ namespace System.Application.Services.Implementation
             return string.Empty;
         }
 
+        public const string kate = "kate";
+        public const string vi = "vi";
+
         public string? GetFileName(TextReaderProvider provider)
         {
-            return null;
+            return vi;
         }
 
         public void SetBootAutoStart(bool isAutoStart, string name)

System.Application.SteamTools.Client.Desktop.Linux/Application/UI/NotifyIcon.cs

@@ -98,7 +98,7 @@ namespace System.Application.UI
                             new LinuxTrayIcon<TContextMenu>(ToolTipText, IconPath, ContextMenu));
                     }
                , canTok.Token, TaskCreationOptions.AttachedToParent, TaskScheduler.Default);
-                }, MainThreadDesktop.DispatcherPriority.MaxValue);
+                }, MainThreadDesktop.DispatcherPriority.MaxValue, true);
             }
         }
     }

System.Application.SteamTools.Client.Desktop.Linux/System.Application.SteamTools.Client.Desktop.Linux.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net5.0</TargetFramework>
+    <TargetFramework>netstandard2.1</TargetFramework>
     <RootNamespace>System</RootNamespace>
   </PropertyGroup>