message: Fix test failure by copying snapshot file for create link table relationship test
diff: @@ -1358,7 +1358,8 @@ describe("iModel", () => {
  });
  it("should create link table relationship instances", () => {
  - const testImodel = imodel1;
  + const snapshotFile2: string = IModelTestUtils.prepareOutputFile("IModel", "CreateLinkTable.bim");
  + const testImodel = SnapshotDb.createFrom(imodel1, snapshotFile2);
  const elements = testImodel.elements;
  testImodel.nativeDb.enableTxnTesting();
  @@ -1426,7 +1427,7 @@ describe("iModel", () => {
  ede1.delete();
  testImodel.saveChanges("step 4");
  -
  + testImodel.close();
  });
  it("should set EC properties of various types", async () => {
  