TimePicker的SelectedTime在绑定时报错 #1348
Description
Describe the bug
使用Stylet框架，在xaml上绑定SelectedTime到属性上时，报错“Object reference not set to an instance of anobject.”。在项目启动后热重载编辑绑定信息时可用。
Steps to reproduce the bug
无
Expected behavior
No response
Screenshots
NuGet package version
HandyControl 3.4.0
IDE
Visual Studio 2022
Framework type
.Net 5.0
Windows version
No response
Additional context
No response