DefaultDiagnosticsContext should cache resultSetFetchedRows

[lukaseder]

The logic in DefaultDiagnosticsContext::resultSetFetchedRows alters the underlying ResultSet in order to calculate the actual fetched rows:

    public final int resultSetFetchedRows() {
        if (resultSet == null)
            return -1;

        try {
            if (resultSetClosing || resultSet.getType() != ResultSet.TYPE_FORWARD_ONLY) {
                while (resultSet.next())
                    resultSetFetchedRows++;

                resultSet.absolute(resultSetConsumedRows);
            }
        }
        catch (SQLException ignore) {}

        return resultSetFetchedRows;
    }

This means that one DiagnosticsListener querying this value might affect the result of this method for other listeners later on.

[lukaseder]

This was discovered as the LoggingDiagnosticsListener created a regression: #14146

[lukaseder]

Fixed in jOOQ 3.18.0, 3.17.6 (#14192), and 3.16.12 (#14193)