last_rowid returns `int ROWID` on non-`int` PKs

## Description

Non-int last_pk are called incorrectly, or the table continues to have a ROWID. This results in that `last_id` check on any DB change returns the hidden `int ROWID` rather than whatever the pk was set to.

- https://www.sqlite.org/c3ref/last_insert_rowid.html
- https://www.sqlite.org/withoutrowid.html

## Test

```sh
python tests/test_upsert.py::test_upsert_with_hash_id
```

首先运行 tests/test_upsert.py::test_upsert_with_hash_id，并阅读链接的 SQLite 文档中关于 last_insert_rowid 和 WITHOUT ROWID 表的内容。跟踪非整数主键的 last_rowid 行为。当 last_id 检查返回分配的主键值，而不是隐藏的整数 ROWID 时，即表示完成。

由索引模型根据 Issue 内容生成。