message: Pass new secret storage key to bootstrap path
  This passes the newly created secret storage key down to the bootstrap path for
  temporary caching to avoid prompting the user for it again in the later stages
  of bootstrapping.
  Fixes
diff: @@ -69,6 +69,7 @@ export default class CreateSecretStorageDialog extends React.PureComponent {
  this._keyInfo = null;
  this._encodedRecoveryKey = null;
  + this._recoveryKey = null;
  this._recoveryKeyNode = null;
  this._setZxcvbnResultTimeout = null;
  @@ -234,14 +235,22 @@ export default class CreateSecretStorageDialog extends React.PureComponent {
  if (force) {
  await cli.bootstrapSecretStorage({
  authUploadDeviceSigningKeys: this._doBootstrapUIAuth,
  - createSecretStorageKey: async () => this._keyInfo,
  + createSecretStorageKey: async () => [
  + this._keyInfo,
  + this._encodedRecoveryKey,
  + this._recoveryKey,
  + ],
  setupNewKeyBackup: true,
  setupNewSecretStorage: true,
  });
  } else {
  await cli.bootstrapSecretStorage({
  authUploadDeviceSigningKeys: this._doBootstrapUIAuth,
  - createSecretStorageKey: async () => this._keyInfo,
  + createSecretStorageKey: async () => [
  + this._keyInfo,
  + this._encodedRecoveryKey,
  + this._recoveryKey,
  + ],
  keyBackupInfo: this.state.backupInfo,
  setupNewKeyBackup: !this.state.backupInfo && this.state.useKeyBackup,
  getKeyBackupPassphrase: promptForBackupPassphrase,
  @@ -299,10 +308,11 @@ export default class CreateSecretStorageDialog extends React.PureComponent {
  }
  _onSkipPassPhraseClick = async () => {
  - const [keyInfo, encodedRecoveryKey] =
  + const [keyInfo, encodedRecoveryKey, recoveryKey] =
  await MatrixClientPeg.get().createRecoveryKeyFromPassphrase();
  this._keyInfo = keyInfo;
  this._encodedRecoveryKey = encodedRecoveryKey;
  + this._recoveryKey = recoveryKey;
  this.setState({
  copied: false,
  downloaded: false,
  @@ -335,10 +345,11 @@ export default class CreateSecretStorageDialog extends React.PureComponent {
  if (this.state.passPhrase !== this.state.passPhraseConfirm) return;
  - const [keyInfo, encodedRecoveryKey] =
  + const [keyInfo, encodedRecoveryKey, recoveryKey] =
  await MatrixClientPeg.get().createRecoveryKeyFromPassphrase(this.state.passPhrase);
  this._keyInfo = keyInfo;
  this._encodedRecoveryKey = encodedRecoveryKey;
  + this._recoveryKey = recoveryKey;
  this.setState({
  copied: false,
  downloaded: false,
  