Array field should be passed to the columnInfo

[YangKeao]

The following sql will fail:

create table t (pk varchar(4) primary key clustered, j json, str varchar(255), value int, key idx((cast(j as char(100) array)), str));
insert into t values ("1", '["a"]', 'b', 1);
select * from t use index(idx) where "a" member of (j);

Because tikv thinks it's a normal column and try to restore the data. However, the restore data doesn't exist in the value because tidb think it's a json and don't need to restore.

A better way to fix this is to set the collation to binary. See #46691. This issue should also be fixed for backward compatibility (for existing data / indexes).