Spanner: executeUpdate() and batchUpdate() could cause AbortedException when using TransactionManager #5951

    DatabaseClient client =
        spanner.getDatabaseClient(DatabaseId.of(PROJECT_ID, INSTANCE_ID, DATABASE_ID));
    try (TransactionManager manager = client.transactionManager()) {
      TransactionContext txn = manager.begin();
      while (true) {
        try {
          ...
          // Transaction has been aborted by Cloud Spanner before the following statement.
          long updateCount = txn.executeUpdate("UPDATE FOO SET BAR=1 WHERE ID=1");
          manager.commit();
          break;
        } catch (AbortedException e) {
          Thread.sleep(e.getRetryDelayInMillis() / 1000);
          // This line will throw an IllegalStateException with message
          // 'resetForRetry can only be called if the previous attempt aborted'
          // because the executeUpdate(...) method does not inform the transaction
          // manager that the transaction aborted.
          txn = manager.resetForRetry();
        }
      }
    }