✨ When removing a quiddity, disconnect every quiddity connected to it.

After merging this, a quiddity that is removed will disconnect all its own sfids and will disconnect the sfids of all quiddities connected to all its swids. To accomplish that, this makes it so that the claw object of quiddities remembers the connections that were made to its writers, before it used to only remember connections to its followers.

This MR makes some breaking changes to the quiddity connection state behaviour on quiddity removal.