update collection before emitting `message`

This reverses a long-standing sequence of events in the DDP client as
noted here:
https://github.com/oortcloud/node-ddp-client/issues/22#issuecomment-2160
9175

However, message filters were removed by
https://github.com/oortcloud/node-ddp-client/commit/78b44d1f90475c1875b0
ab3aab009956c9efe2a4 so keeping the emit -> update behavior doesn’t
make any sense.