message: Fix dpta signin when env vars undefined.
diff: @@ -39,7 +39,7 @@ export async function initializeBackend() {
  if (ProcessDetector.isElectronAppBackend) {
  const rpcInterfaces = [DisplayPerfRpcInterface, IModelTileRpcInterface, SnapshotIModelRpcInterface, IModelReadRpcInterface];
  - let authClient;
  + let authClient: ElectronMainAuthorization | undefined;
  if (process.env.IMJS_OIDC_ELECTRON_TEST_CLIENT_ID && process.env.IMJS_OIDC_ELECTRON_TEST_REDIRECT_URI && process.env.IMJS_OIDC_ELECTRON_TEST_SCOPES) {
  authClient = new ElectronMainAuthorization({
  clientId: process.env.IMJS_OIDC_ELECTRON_TEST_CLIENT_ID,
  @@ -55,6 +55,8 @@ export async function initializeBackend() {
  },
  iModelHost,
  });
  +
  + if (authClient)
  await authClient.signInSilent();
  } else
  await IModelHost.startup(iModelHost);
  