Fix hotkey size change issue

Author: Jack251970

Flow.Launcher/MainWindow.xaml

@@ -10,7 +10,7 @@
     xmlns:vm="clr-namespace:Flow.Launcher.ViewModel"
     Name="FlowMainWindow"
     Title="Flow Launcher"
-    Width="{Binding MainWindowWidth, Mode=OneWay}"
+    Width="{Binding MainWindowWidth, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"
     MinWidth="400"
     MinHeight="30"
     d:DataContext="{d:DesignInstance Type=vm:MainViewModel}"

Flow.Launcher/ViewModel/MainViewModel.cs

@@ -584,22 +584,22 @@ public string QueryText
         [RelayCommand]
         private void IncreaseWidth()
         {
-            Settings.WindowSize += 100;
+            MainWindowWidth += 100;
             Settings.WindowLeft -= 50;
             OnPropertyChanged(nameof(MainWindowWidth));
         }
 
         [RelayCommand]
         private void DecreaseWidth()
         {
-            if (MainWindowWidth - 100 < 400 || Settings.WindowSize == 400)
+            if (MainWindowWidth - 100 < 400 || MainWindowWidth == 400)
             {
-                Settings.WindowSize = 400;
+                MainWindowWidth = 400;
             }
             else
             {
+                MainWindowWidth -= 100;
                 Settings.WindowLeft += 50;
-                Settings.WindowSize -= 100;
             }
 
             OnPropertyChanged(nameof(MainWindowWidth));