ux: remove Use fixed tab width in titlebar option from Preferences and makes it the only and default

Signed-off-by: leo <longshuang@msn.cn>

Author: love-linger

src/Converters/BoolConverters.cs

@@ -5,9 +5,6 @@ namespace SourceGit.Converters
 {
     public static class BoolConverters
     {
-        public static readonly FuncValueConverter<bool, double> ToPageTabWidth =
-            new FuncValueConverter<bool, double>(x => x ? 200 : double.NaN);
-
         public static readonly FuncValueConverter<bool, FontWeight> IsBoldToFontWeight =
             new FuncValueConverter<bool, FontWeight>(x => x ? FontWeight.Bold : FontWeight.Regular);
 

src/Resources/Locales/en_US.axaml

@@ -570,7 +570,6 @@
   <x:String x:Key="Text.Preferences.Appearance.Theme" xml:space="preserve">Theme</x:String>
   <x:String x:Key="Text.Preferences.Appearance.ThemeOverrides" xml:space="preserve">Theme Overrides</x:String>
   <x:String x:Key="Text.Preferences.Appearance.UseAutoHideScrollBars" xml:space="preserve">Use auto-hide scrollbars</x:String>
-  <x:String x:Key="Text.Preferences.Appearance.UseFixedTabWidth" xml:space="preserve">Use fixed tab width in titlebar</x:String>
   <x:String x:Key="Text.Preferences.Appearance.UseNativeWindowFrame" xml:space="preserve">Use native window frame</x:String>
   <x:String x:Key="Text.Preferences.DiffMerge" xml:space="preserve">DIFF/MERGE TOOL</x:String>
   <x:String x:Key="Text.Preferences.DiffMerge.Path" xml:space="preserve">Install Path</x:String>

src/ViewModels/Preferences.cs

@@ -148,12 +148,6 @@ public int DateTimeFormat
             }
         }
 
-        public bool UseFixedTabWidth
-        {
-            get => _useFixedTabWidth;
-            set => SetProperty(ref _useFixedTabWidth, value);
-        }
-
         public bool UseAutoHideScrollBars
         {
             get => _useAutoHideScrollBars;
@@ -718,7 +712,6 @@ private bool RemoveInvalidRepositoriesRecursive(List<RepositoryNode> collection)
 
         private int _maxHistoryCommits = 20000;
         private int _subjectGuideLength = 50;
-        private bool _useFixedTabWidth = true;
         private bool _useAutoHideScrollBars = true;
         private bool _useGitHubStyleAvatar = true;
         private bool _showAuthorTimeInGraph = false;

src/Views/LauncherTabBar.axaml

@@ -42,7 +42,7 @@
 
           <ListBox.ItemTemplate>
             <DataTemplate DataType="vm:LauncherPage">
-              <Border Width="{Binding Source={x:Static vm:Preferences.Instance}, Path=UseFixedTabWidth, Converter={x:Static c:BoolConverters.ToPageTabWidth}}" Height="30"
+              <Border Width="200" Height="30"
                       Padding="0,2,0,0"
                       Background="Transparent"
                       PointerPressed="OnPointerPressedTab"

src/Views/Preferences.axaml

@@ -179,7 +179,7 @@
           <TabItem.Header>
             <TextBlock Classes="tab_header" Text="{DynamicResource Text.Preferences.Appearance}"/>
           </TabItem.Header>
-          <Grid Margin="8" RowDefinitions="32,32,32,32,32,32,32,32,Auto" ColumnDefinitions="Auto,*">
+          <Grid Margin="8" RowDefinitions="32,32,32,32,32,32,32,Auto" ColumnDefinitions="Auto,*">
             <TextBlock Grid.Row="0" Grid.Column="0"
                        Text="{DynamicResource Text.Preferences.Appearance.Theme}"
                        HorizontalAlignment="Right"
@@ -277,16 +277,11 @@
             </TextBox>
 
             <CheckBox Grid.Row="6" Grid.Column="1"
-                      Height="32"
-                      Content="{DynamicResource Text.Preferences.Appearance.UseFixedTabWidth}"
-                      IsChecked="{Binding UseFixedTabWidth, Mode=TwoWay}"/>
-
-            <CheckBox Grid.Row="7" Grid.Column="1"
                       Height="32"
                       Content="{DynamicResource Text.Preferences.Appearance.UseAutoHideScrollBars}"
                       IsChecked="{Binding UseAutoHideScrollBars, Mode=TwoWay}"/>
 
-            <CheckBox Grid.Row="8" Grid.Column="1"
+            <CheckBox Grid.Row="7" Grid.Column="1"
                       Height="32"
                       Content="{DynamicResource Text.Preferences.Appearance.UseNativeWindowFrame}"
                       IsChecked="{Binding UseSystemWindowFrame, Mode=OneTime}"