Reactive lookup of the space designated as the default target for unscoped content.
The designation lives on the settings space properties, so this re-resolves both when the space
list changes and when the user picks a different default — on this device or another.
Reactive lookup of the space designated as the default target for unscoped content.
The designation lives on the settings space properties, so this re-resolves both when the space list changes and when the user picks a different default — on this device or another.