Parser fails when using alias named "TOP" in SELECT statement

Reproducer: Using datafusion-cli https://github.com/apache/datafusion/tree/main/datafusion-cli compiled from hash 5bbdb7eb1

```
> WITH t AS (SELECT 1 AS val) SELECT tt.val FROM t AS tt;
+-----+
| val |
+-----+
| 1 |
+-----+
1 row(s) fetched.
Elapsed 0.050 seconds.

> WITH t AS (SELECT 1 AS val) SELECT top.val FROM t AS top; 🤔 Invalid statement: SQL error: ParserError("Expected: literal int, found: . at Line: 1, Column: 39")
```

Found by SQLStorm https://github.com/apache/datafusion/issues/17698

使用從 hash 5bbdb7eb1 建置的 datafusion-cli 重現此失敗，並比較正常運作的別名 tt 與失敗的別名 top。追蹤 SQL 剖析器對 SELECT 別名中 TOP 的處理，並驗證使用 top.val 的查詢能夠完成剖析並傳回預期的資料列。

由索引模型根據 Issue 內容生成。