Add "Show hidden events in timeline" to quick settings if "Developer mode" is enabled

[HarHarLinks]

Your use case

Requires #20683

What would you like to do?

When Developer mode is enabled per #20683, add a toggle for the commonly used "Show hidden events in timeline" to the new quick settings thingy in the space bar.

Why would you like to do it?

You would frequently want to toggle this setting to compare or quickly debug something while normally hiding events.
This is much easier with #20646, but I would argue that this is a fitting place in the UI if you can't remember, or the shortcut doesn't work on your keyboard layout, or you just want to check the current state of the toggle.

Have you considered any alternatives?

No response

Additional context

No response