[cherry-pick]*: add a variable to control whether we can write _tidb_rowid

[zimulala]

What problem does this PR solve?

create table tt(id binary(10), c int, primary key(id));
insert tt values (1, 10);
insert into tt (id, c, _tidb_rowid) values(30000,10,1);
tidb> select * from tt use index(`primary`);
+------------+------+
| id         | c    |
+------------+------+
| 30000      |   10 |
| 30000      |   10 |
+------------+------+
2 rows in set (0.00 sec)
tidb> select * from tt;
+------------+------+
| id         | c    |
+------------+------+
| 30000      |   10 |
+------------+------+
1 row in set (0.00 sec)

What is changed and how it works?

cherry-pick #8126

[zimulala]

/run-all-tests

[zimulala]

PTAL @winkyao @zz-jason @jackysp

[zz-jason]

LGTM

[jackysp]

LGTM