message: Fix a compile error when benchmarking old core versions
diff: #include "../util/random.hpp"
  #include "../util/benchmark_results.hpp"
  #include "../util/test_path.hpp"
  +#include "../util/unit_test.hpp"
  #if REALM_ENABLE_ENCRYPTION
  #include "../util/crypt_key.hpp"
  #endif
  @@ -769,7 +770,11 @@ void run_benchmark(BenchmarkResults& results)
  << (key == nullptr ? "_EncryptionOff" : "_EncryptionOn");
  std::string ident = ident_ss.str();
  - realm::test_util::RealmPathInfo test_context { ident.c_str() };
  + realm::test_util::unit_test::TestDetails test_details;
  + test_details.suite_name = "BenchmarkCommonTasks";
  + test_details.test_name = ident.c_str();
  + test_details.file_name = __FILE__;
  + test_details.line_number = __LINE__;
  // Open a SharedGroup:
  realm::test_util::SharedGroupTestPathGuard realm_path("benchmark_common_tasks" + ident);
  