Emit a `crypto.initComplete` once crypto is initialised
Emit a `crypto.initComplete` once crypto is initialised

So that the app can call crypto-dependent functions at
the correct point in time.

krombel/matrix-js-sdk,matrix-org/matrix-js-sdk,matrix-org/matrix-js-sdk,krombel/matrix-js-sdk,matrix-org/matrix-js-sdk,matrix-org/matrix-js-sdk,krombel/matrix-js-sdk