matrix: fix invitation joining
matrix: fix invitation joining

Former-commit-id: 60f7277dd784dea5c6bcc87c33e5eab901f7888c
Former-commit-id: 40a6f1082ae8359b075804d0d16c2f0385456fdb
torhve/ivar2,torhve/ivar2,torhve/ivar2,haste/ivar2