Close input readers when ParquetRewriter setup fails

### Describe the bug, including details regarding any error messages, version, and platform.

`ParquetRewriter.getFileReaders` opens each input reader into a local list. If opening a later input throws `IOException`, the exception is propagated without closing readers already opened for earlier inputs. Because construction fails, callers cannot close those readers, which leaks their input streams.

Expected behavior: readers opened before the failure are closed before the setup exception is propagated.

### Component(s)

Core

从 ParquetRewriter.getFileReaders 开始，跟踪输入读取器的打开方式，以及设置过程中的 IOExceptions 如何传播。确认在发生故障前打开的读取器会在异常逸出之前关闭，然后运行针对 ParquetRewriter 或 Core 的专门测试，以确认设置失败时的行为。

由索引模型根据 Issue 内容生成。