识别部分bug修复

[ddfinshes]

1. paragraph部分

• inline两段text拼接时，中间是否使用空格拼接的判断更新（' '还是''）。避免中文双引号、单引号、(、[等拼接时用空格连接，导致一行内出现额外空格， 例如'( APC)'， '“ I do wear..'。
• paragraph inline判断tags新增
• <sup>和 <sub>标签避免转义为<sup&gt;和<sub&gt;导致文本中上下标功能失效，重写replace_entities().

2. code部分

• 原逻辑中classname中存在code单词即被打上code标签，导致audio、list类别内容被识别为code。增加一重判断，如果标签tag为audio、ul等就不被识别为code。

3. list 部分

• 在list存入content item列表时，增加一重判断，避免item元素为''或者'-'依旧存入content_list中。
• 遇到<ul><ul></ul></ul>or<ul><div></div></ul>嵌套结构的列表没有被识别出来，导致正文缺少一部分列表内容。

[codecov]

Codecov Report

Attention: Patch coverage is 92.68293% with 3 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
..._web_kit/extractor/html/recognizer/code/classes.py	77.77%	2 Missing ⚠️
llm_web_kit/extractor/html/recognizer/text.py	95.83%	1 Missing ⚠️

@@            Coverage Diff             @@
##              dev     #456      +/-   ##
==========================================
- Coverage   89.97%   89.76%   -0.21%     
==========================================
  Files         107      102       -5     
  Lines        8288     8465     +177     
==========================================
+ Hits         7457     7599     +142     
- Misses        831      866      +35     

Files with missing lines	Coverage Δ
llm_web_kit/extractor/html/recognizer/list.py	97.29% <100.00%> (+0.07%)	⬆️
llm_web_kit/extractor/html/recognizer/text.py	94.41% <95.83%> (+0.03%)	⬆️
..._web_kit/extractor/html/recognizer/code/classes.py	86.20% <77.77%> (-3.80%)	⬇️

... and 12 files with indirect coverage changes

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

[yogacc33]

这里的处理逻辑是如何 p['c'] == '-' ，这个 - 就直接丢掉吗，哪些情况会出现 '-' ?

添加子元素的文本内容

if 'c' in p:
if p['c'] != '' and p['c'] != '-':
paragraph.append({'c': p['c'], 't': p.get('t', ParagraphTextType.TEXT)})

[ddfinshes]

p['c'] == '-'会在markdown上显示为独占一行'-'。去除‘-’不会影响包含实际内容的其他list item。
比如：

考虑到‘-’与原文保持一致，选择保留了。