TestSelectHiddenColumn unstable

[AilinKid]

Bug Report

Please answer these questions before submitting your issue. Thanks!

1. Minimal reproduce step (Required)

[2024/07/24 17:41:22.379 +08:00] [INFO] [ddl.go:1332] ["DDL job is finished"] [category=ddl] [jobID=107]
    result.go:49: 
        	Error Trace:	/Users/arenatlx/go/src/github.com/pingcap/tidb/pkg/testkit/result.go:49
        	            				/Users/arenatlx/go/src/github.com/pingcap/tidb/pkg/infoschema/test/clustertablestest/tables_test.go:678
        	Error:      	Not equal: 
        	            	expected: "[2]\n"
        	            	actual  : "[3]\n"
        	            	
        	            	Diff:
        	            	--- Expected
        	            	+++ Actual
        	            	@@ -1,2 +1,2 @@
        	            	-[2]
        	            	+[3]
        	            	 
        	Test:       	TestSelectHiddenColumn
        	Messages:   	sql:select count(*) from INFORMATION_SCHEMA.COLUMNS where table_name = 'hidden', args:[]

2. What did you expect to see? (Required)

no error

3. What did you see instead (Required)

error

4. What is your TiDB version? (Required)

master from 7.24, after commit of #54664

[wjhuang2016]

It's already fixed