The drop table statement in prepare is invalid

## Bug Report

Please answer these questions before submitting your issue. Thanks!

### 1. Minimal reproduce step (Required)

create TEMPORARY table t1 (id int);
prepare stmt from 'drop table t1';
execute stmt;
create table t1 (id int);
execute stmt;
show create table t1;
### 2. What did you expect to see? (Required)
table t1 is droped;

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

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

mysql> SELECT tidb_version() ;
+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| tidb_version() |
+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Release Version: v7.6.0-alpha-457-gd076bc1428
Edition: Community
Git Commit Hash: d076bc142886e795cdf0ec9ccb57df7033095161
Git Branch: master
UTC Build Time: 2023-12-14 08:08:36
GoVersion: go1.21.1
Race Enabled: false
Check Table Before Drop: false
Store: unistore |
+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
1 row in set (0.00 sec)