[test](test) fix unstable paimon test cases (apache#46381)

### What problem does this PR solve?

The result should with `order by`

regression-test/suites/external_table_p0/paimon/paimon_base_filesystem.groovy

@@ -34,10 +34,10 @@ suite("paimon_base_filesystem", "p0,external,doris,external_docker,external_dock
         String txYunAk = context.config.otherConfigs.get("txYunAk")
         String txYunSk = context.config.otherConfigs.get("txYunSk")
 
-        def obs = """select * from ${catalog_obs}.db1.all_table limit 1;"""
-        def oss = """select * from ${catalog_oss}.db1.all_table limit 1;"""
-        def cos = """select * from ${catalog_cos}.db1.all_table limit 1;"""
-        def cosn = """select * from ${catalog_cosn}.db1.all_table limit 1;"""
+        def obs = """select * from ${catalog_obs}.db1.all_table order by c1 limit 1;"""
+        def oss = """select * from ${catalog_oss}.db1.all_table order by c1 limit 1;"""
+        def cos = """select * from ${catalog_cos}.db1.all_table order by c1 limit 1;"""
+        def cosn = """select * from ${catalog_cosn}.db1.all_table order by c1 limit 1;"""
 
         sql """drop catalog if exists ${catalog_obs};"""
         sql """drop catalog if exists ${catalog_oss};"""