`ALTER TABLE ... PARTITION BY ...` should avoid foreign key in table

## Bug Report

Please answer these questions before submitting your issue. Thanks!

### 1. Minimal reproduce step (Required)

```sql
CREATE TABLE parent (id INT PRIMARY KEY);
CREATE TABLE child (pid INT, FOREIGN KEY (pid) REFERENCES parent(id));
ALTER TABLE parent PARTITION BY HASH(id) PARTITIONS 4; -- Success
INSERT INTO parent VALUES (1);
INSERT INTO child VALUES (1); -- ERROR 1452（no referenced row）
```

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

Return `ErrForeignKeyOnPartitioned`.

### 3. What did you see instead (Required)

The DDL `ALTER TABLE parent PARTITION BY HASH(id) PARTITIONS 4` succeed.

### 4. What is your TiDB version? (Required)