`--initialize-sql-file` can not create audit log filter by `SELECT`

## Bug Report

Please answer these questions before submitting your issue. Thanks!

### 1. Minimal reproduce step (Required)

1. Prepare a `init.sql`
```sql
SELECT audit_log_create_filter('all', '{}');
SELECT audit_log_create_rule('test@%', 'all');
```
2. bootstrap an **enterprise** vertion tidb with option `--initialize-sql-file=./init.sql`

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

`select * from mysql.audit_log_filters` can get a filter

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

`select * from mysql.audit_log_filters` returns empty result

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

master

### Workaround

Use `DO` instead of `SELECT` can work:
```sql
DO audit_log_create_filter('all', '{}');
DO audit_log_create_rule('test@%', 'all');
```