使用return_word_box功能，输出很奇怪

[huameinan219]

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🐛 Bug (问题描述)

直接安装paddleocr包，调用PaddleOCR(lang="ch", return_word_box=True),输出的结果类似于：
[[[26.0, 37.0], [304.0, 37.0], [304.0, 73.0], [26.0, 73.0]], ('纯臻营养护发素', 0.9946897625923157, [46.085826210826205, [['纯', '臻', '营', '养', '护', '发', '素']], [[3, 10, 16, 23, 30, 36, 43]], ['cn']])]
后面的 [46.085826210826205, [['纯', '臻', '营', '养', '护', '发', '素']], [[3, 10, 16, 23, 30, 36, 43]] 代表什么呢？如何将其转化为4点检测框呢？我查看了#10377，里面的解释没看懂。
查看源码源码第233行，cal_ocr_word_box函数返回的应该是检测框啊，为啥调用paddleocr包，返回的单字检测结果不是框？该如何将其转化为框呢？

🏃‍♂️ Environment (运行环境)

x86 CPU

🌰 Minimal Reproducible Example (最小可复现问题的Demo)

PaddleOCR(lang="ch", return_word_box=True)