"The 'kill' or 'admin' operations do not accommodate user-defined variables.

## Bug Report

Please answer these questions before submitting your issue. Thanks!

### 1. Minimal reproduce step (Required)

set @id=100;
kill @id;
admin cancel ddl jobs @id;

### 2. What did you expect to see? (Required)
Query kill or admin is executed successfully; The behavior of MySQL is as follows

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

### 4. What is your TiDB version? (Required)
mysql> select tidb_version();
+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| tidb_version() |
+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Release Version: v6.5.6
Edition: Community
Git Commit Hash: 8445821f105477d5e31de9d8451b7fbf35a02cd1
Git Branch: heads/refs/tags/v6.5.6
UTC Build Time: 2023-12-04 07:21:27
GoVersion: go1.19.13
Race Enabled: false
TiKV Min Version: 6.2.0-alpha
Check Table Before Drop: false
Store: tikv |
+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
1 row in set (0.00 sec)