修改了logwindows输出，避免高频输出时卡死。修改了流程运行上下文，使节点具备终止分支运行的能力。

WorkBench.Remote/Themes/InputDialog.xaml

@@ -0,0 +1,16 @@
+<Window x:Class="Serein.WorkBench.Themes.InputDialog"
+        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+        xmlns:local="clr-namespace:Serein.WorkBench.Themes"
+        mc:Ignorable="d"
+        Title="InputDialog" Height="450" Width="800">
+    <StackPanel Margin="10">
+        <TextBox x:Name="InputTextBox" Width="200" Margin="0,0,0,10" />
+        <StackPanel Orientation="Horizontal" HorizontalAlignment="Right">
+            <Button Content="确认" Click="ConfirmButton_Click" Margin="5" />
+            <Button Content="取消" Click="CancelButton_Click" Margin="5" />
+        </StackPanel>
+    </StackPanel>
+</Window>