feat(墨迹渐隐): 添加在笔工具菜单中隐藏墨迹渐隐控制开关的功能

添加新设置选项，允许用户在笔工具菜单中隐藏墨迹渐隐控制开关。该功能包括：
- 新增设置属性 HideInkFadeControlInPenMenu
- 在设置界面添加对应的开关控件
- 实现开关状态同步和可见性更新逻辑
- 更新主界面笔工具菜单中的控制面板可见性

终于不怕课间有人玩墨迹渐隐了！！！

Ink Canvas/MainWindow.xaml

@@ -851,6 +851,16 @@
                                         <TextBlock Foreground="#fafafa" Text="{Binding ElementName=InkFadeTimeSlider, Path=Value, StringFormat={}{0:0}ms}" 
                                                    VerticalAlignment="Center" FontSize="14" Margin="16,0,0,0" />
                                     </ui:SimpleStackPanel>
+                                    <Line HorizontalAlignment="Center" X1="0" Y1="0" X2="400" Y2="0" Stroke="#3f3f46"
+                                          StrokeThickness="1" Margin="0,4,0,4" />
+                                    <ui:SimpleStackPanel Orientation="Horizontal" HorizontalAlignment="Left">
+                                        <TextBlock Foreground="#fafafa" Text="在笔工具菜单中隐藏墨迹渐隐控制" VerticalAlignment="Center"
+                                                   FontSize="14" Margin="0,0,16,0" />
+                                        <ui:ToggleSwitch OnContent="" OffContent="" Name="ToggleSwitchHideInkFadeControlInPenMenu"
+                                                         IsOn="False" FontFamily="Microsoft YaHei UI" FontWeight="Bold"
+                                                         Toggled="ToggleSwitchHideInkFadeControlInPenMenu_Toggled" />
+                                    </ui:SimpleStackPanel>
+                                    <TextBlock Text="# 开启后，主工具栏上点击笔工具后弹出的上下文菜单中将不显示墨迹渐隐控制开关，可以有效防止课间老是有人玩墨迹渐隐功能" TextWrapping="Wrap" Foreground="#a1a1aa" />
 
                                 </ui:SimpleStackPanel>
                             </GroupBox>
@@ -5296,7 +5306,7 @@
                                                                             IsOn="{Binding ElementName=ToggleSwitchEnableInkToShape, Path=IsOn}" />
                                                                     </ui:SimpleStackPanel>
                                                                     <ui:SimpleStackPanel Orientation="Horizontal"
-                                                                        Width="100">
+                                                                        Width="100" x:Name="InkFadeControlPanel1">
                                                                         <Label Margin="0,0,10,0" Content="墨迹渐隐"
                                                                             Foreground="{DynamicResource FloatBarForeground}"
                                                                             FontSize="12"
@@ -8320,7 +8330,7 @@
                                                                         IsOn="{Binding ElementName=ToggleSwitchEnableInkToShape, Path=IsOn}" />
                                                                 </ui:SimpleStackPanel>
                                                                 <ui:SimpleStackPanel Orientation="Horizontal"
-                                                                    Width="100">
+                                                                    Width="100" x:Name="InkFadeControlPanel2">
                                                                     <Label Margin="0,0,10,0" Content="墨迹渐隐"
                                                                            Foreground="{DynamicResource FloatBarForeground}"
                                                                            FontSize="12" VerticalAlignment="Center" />