MXKRoomDataSource: Fix performance regression due to https://github.com/matrix-org/matrix-ios-kit/commit/5e0313dc2726988fa2db7d49e7cfbda1359bd670. With this commit, bubblesSnapshot was never set to nil which leads to a refresh of the UI for every event received in the /events response chunk. Now, the UI is refreshed only when the full chunk is processed.
MXKRoomDataSource: Fix performance regression due to https://github.com/matrix-org/matrix-ios-kit/commit/5e0313dc2726988fa2db7d49e7cfbda1359bd670.
With this commit, bubblesSnapshot was never set to nil which leads to a refresh of the UI for every event received in the /events response chunk.
Now, the UI is refreshed only when the full chunk is processed.

matrix-org/matrix-ios-kit,matrix-org/matrix-ios-kit,matrix-org/matrix-ios-kit,matrix-org/matrix-ios-kit