ddl: fix mix DDLs blocks 2*lease on unistore (#18468)
ddl: fix mix DDLs blocks 2*lease on unistore (#18468)


pingcap/tidb,pingcap/tidb,ngaut/tidb,c4pt0r/tidb,ngaut/tidb,coocood/tidb,pingcap/tidb,XuHuaiyu/tidb,XuHuaiyu/tidb,kyle-wang/tidb,coocood/tidb,ngaut/tidb,pingcap/tidb,kyle-wang/tidb,EvilMcJerkface/tidb,kyle-wang/tidb,c4pt0r/tidb,c4pt0r/tidb,ngaut/tidb,c4pt0r/tidb,kyle-wang/tidb,pingcap/tidb,EvilMcJerkface/tidb,c4pt0r/tidb,kyle-wang/tidb,pingcap/tidb,c4pt0r/tidb,ngaut/tidb,ngaut/tidb,kyle-wang/tidb