Showing local time with seconds in notification center calendar

[chk1]

One thing I've been missing in Windows 11 is the display of time with seconds in the notification center / calendar popup. I know there's an option to show the seconds in the taskbar clock (with and without Windhawk mods), but that's not what I want because I find that too distracting.

I did a quick search around with UWPSpy and landed on this TextBlock element:

Is there currently an easy way to just add the current time there? I had a look at the "Taskbar Clock Customization" mod and it source code, and it seems to be more involved than just setting a time format value somewhere in some UWP field attribute.

There's a question on Superuser asking basically the same: https://superuser.com/questions/1801741/display-windows-11-clock-like-the-one-in-windows-10-when-tray-is-clicked