[branch-2.1][fix](jdbc catalog) fix jdbc mysql client match jsonb type (#36180)

bp #36177

fe/fe-core/src/main/java/org/apache/doris/datasource/jdbc/client/JdbcMySQLClient.java

@@ -380,6 +380,7 @@ public class JdbcMySQLClient extends JdbcClient {
             case "STRING":
             case "TEXT":
             case "JSON":
+            case "JSONB":
                 return ScalarType.createStringType();
             case "HLL":
                 return ScalarType.createHllType();