Make ourselves a new rendered each time
Make ourselves a new rendered each time

Rather than keeping one in memory, abusing it in different ways
each time and then craefully putting it back the way it was (and
in one case, failing, because we forgot to put the `out` method
back).

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