Tested by setting `usingOlmViaTunnelbrokerForDMs` to true. Not setting this flag yet, because it has other effects.
Tested that a thick thread gets created on both web and native.
Tested that if the flag is set to `false`, thin threads are created correctly
There is a problem with navigation - on both platfrms when the thick thread is created the user is not navigate to it. Instead they stay in the pending thread. I will address that in [[https://linear.app/comm/issue/ENG-9147/fix-navigation-in-thick-thread-creation | ENG-9147]]