翻译后段落背景色（高亮）未完整保留

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Environment

- OS:Ubuntu 22.04.1 LTS
- Python:3.11.14
- BabelDOC:0.5.23

Describe the bug

原始 PDF 中部分段落带有黄色背景色（通过 1 1 0 rg 填充矩形实现的高亮效果）。翻译后，这些黄色背景矩形未完整跟随翻译后的段落：

部分高亮区域缺失或覆盖范围与译文不匹配 预期行为：翻译后的文本应保留与原文相同的背景色区域，高亮矩形应随译文位置和长度自动调整。

Steps to Reproduce

1. 打开任意一个word，输入一个需要换行的长段落，选择背景色，导出为pdf 2.进行翻译

Expected Behavior

翻译后的段落应保留原始的黄色背景高亮，且高亮区域应与译文范围一致。

Relevant Log Output or Screenshots

Original PDF File

No response

Additional Context

No response