chore: 优化主界面布局

src/MaaWpfGui/Views/UI/RootView.xaml

@@ -19,6 +19,7 @@
     mc:Ignorable="d">
     <DockPanel>
         <TabControl
+            BorderThickness="0,1,0,0"
             DisplayMemberPath="DisplayName"
             ItemsSource="{Binding Items}"
             SelectedItem="{s:RethrowingBinding ActiveItem}"

src/MaaWpfGui/Views/UI/TaskQueueView.xaml

@@ -100,6 +100,7 @@
                                 <Menu>
                                     <MenuItem
                                         Width="{Binding InverseSelectedWidth}"
+                                        Padding="19,5,0,5"
                                         Command="{s:Action ChangeInverseMode}"
                                         Header="{Binding InverseMenuText}" />
                                 </Menu>