Join a space the local identity has already been admitted to, by its key, then switch to it.
Defined here rather than in plugin-space because plugin-client renders the invitation message's
Join action, and plugin-space depends on plugin-client; plugin-space handles it.
Join a space the local identity has already been admitted to, by its key, then switch to it.
Defined here rather than in plugin-space because plugin-client renders the invitation message's Join action, and plugin-space depends on plugin-client; plugin-space handles it.