Only show mysql notice if mysql in version string

Closes #11254

includes/admin/views/html-admin-page-status-report.php

@@ -174,7 +174,13 @@ global $wpdb;
 			</tr>
 		<?php endif; ?>
 		<?php
-		if ( ! empty( $wpdb->is_mysql ) ) : ?>
+		if ( $wpdb->use_mysqli ) {
+			$ver = mysqli_get_server_info( $wpdb->dbh );
+		} else {
+			$ver = mysql_get_server_info();
+		}
+
+		if ( ! empty( $wpdb->is_mysql ) && stristr( $ver, 'MySQL' ) ) : ?>
 			<tr>
 				<td data-export-label="MySQL Version"><?php _e( 'MySQL Version', 'woocommerce' ); ?>:</td>
 				<td class="help"><?php echo wc_help_tip( __( 'The version of MySQL installed on your hosting server.', 'woocommerce' ) ); ?></td>