message: BF make it possible once again to run core/backend unit
  tests in imodeljsmobile
diff: @@ -7,7 +7,7 @@ import { AuthorizationToken, AccessToken, ImsActiveSecureTokenClient, ImsDelegat
  import { Appearance, Code, CreateIModelProps, ElementProps, RpcManager, GeometricElementProps, IModel, IModelReadRpcInterface, RelatedElement, RpcConfiguration } from "@bentley/imodeljs-common";
  import {
  IModelHostConfiguration, IModelHost, BriefcaseManager, IModelDb, DefinitionModel, Model, Element,
  - InformationPartitionElement, SpatialCategory, IModelJsFs, IModelJsFsStats, PhysicalPartition, PhysicalModel,
  + InformationPartitionElement, SpatialCategory, IModelJsFs, IModelJsFsStats, PhysicalPartition, PhysicalModel, Platform,
  } from "../backend";
  import { KnownTestLocations } from "./KnownTestLocations";
  import { TestIModelInfo } from "./MockAssetUtil";
  @@ -44,10 +44,13 @@ if (IModelJsFs.existsSync(loggingConfigFile)) {
  Logger.configureLevels(require(loggingConfigFile));
  }
  +let nativePlatformDir: string | undefined;
  +if (!Platform.isMobile()) {
  let nativePlatformForTestsDir = __dirname;
  while (!IModelJsFs.existsSync(path.join(nativePlatformForTestsDir, "nativePlatformForTests")))
  nativePlatformForTestsDir = path.join(nativePlatformForTestsDir, "..");
  -const nativePlatformDir = path.join(path.join(nativePlatformForTestsDir, "nativePlatformForTests"), "node_modules");
  + nativePlatformDir = path.join(path.join(nativePlatformForTestsDir, "nativePlatformForTests"), "node_modules");
  +}
  NativePlatformRegistry.loadAndRegisterStandardNativePlatform(nativePlatformDir);
  // Initialize the RPC interface classes used by tests
  