Change Details

Because we are switching to the composite key in the `messages` table we don't need an additional index. Linear task: ENG-1493

Because we've switched to the composite key in the `messages` table we don't need an additional index for a `toDeviceID`. We can use a hash_key. Linear task: [[ https://linear.app/comm/issue/ENG-1493/change-findmessageitem-removemessageitem-to-use-composite-key | ENG-1493 ]]

Because we ar've switchinged to the composite key in the `messages` table we don't need an additional index for a `toDeviceID`. We can use a hash_key. Linear task: [[ https://linear.app/comm/issue/ENG-1493/change-findmessageitem-removemessageitem-to-use-composite-key | ENG-1493 ]]