fix: Handle encoding errors in selectolax by switching to BeautifulSoup

[ideaflow]

selectolax 会默认将网页字符串视为'utf-8'编码，如果不是这个编码会报错，而BeautifulSoup可以更自动地处理编码问题，所以如果修复html的步骤遇到编码错误，则替换为BeautifulSoup

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

@@            Coverage Diff             @@
##              dev     #569      +/-   ##
==========================================
+ Coverage   90.97%   91.04%   +0.06%     
==========================================
  Files         102      106       +4     
  Lines        8890     9333     +443     
==========================================
+ Hits         8088     8497     +409     
- Misses        802      836      +34     

Files with missing lines	Coverage Δ
...it/main_html_parser/simplify_html/simplify_html.py	83.47% <100.00%> (+0.45%)	⬆️

... and 11 files with indirect coverage changes

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[drunkpig]

bs4在效率上比lxml低10倍。建议采用try...except fallback的形式，在捕获到exception之后再采用bs4兜底