Fix Notifications settings view when threepids is undefined
Fix Notifications settings view when threepids is undefined

Signed-off-by: Charlotte Som <7b3631de08345cbede9e1a0e3bbc41d39c9d295f@hackery.site>

matrix-org/matrix-react-sdk,matrix-org/matrix-react-sdk,matrix-org/matrix-react-sdk,matrix-org/matrix-react-sdk,matrix-org/matrix-react-sdk,matrix-org/matrix-react-sdk