[BUG] Theme does not switching

[sm-g]

描述问题
"Sunrise to sunset" switching does not work

重现步骤
I do not know exact steps to redproduce, but guess that it is caused by internet shutdown in my city yesterday. Like some api request hangs forever. Restarting the app fixes the problem.

预期行为
Theme switching by configured settings

截图

环境信息（请填写以下信息）：

• 程序版本 [1.6.0]
• 系统版本 [Windows11 25H2]

其他内容
在此添加关于问题的任何其他上下文。

[tuyangJs]

Please provide the country or region where you are located to facilitate troubleshooting.