fix: 减少将公式'$'错误识别为货币'$'的情况

[1041206149]

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Motivation

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Modification

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BC-breaking (Optional)

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Use cases (Optional)

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Checklist

Before PR:

• Pre-commit or other linting tools are used to fix the potential lint issues.
• Bug fixes are fully covered by unit tests, the case that causes the bug should be added in the unit tests.
• The modification is covered by complete unit tests. If not, please add more unit test to ensure the correctness.
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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

@@            Coverage Diff             @@
##              dev     #573      +/-   ##
==========================================
- Coverage   90.97%   90.53%   -0.45%     
==========================================
  Files         102      105       +3     
  Lines        8890     9279     +389     
==========================================
+ Hits         8088     8401     +313     
- Misses        802      878      +76     

Files with missing lines	Coverage Δ
llm_web_kit/extractor/html/recognizer/ccmath.py	89.61% <100.00%> (-1.70%)	⬇️
llm_web_kit/libs/html_utils.py	92.55% <100.00%> (-1.69%)	⬇️

... and 12 files with indirect coverage changes

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[e06084]

tag_common_modify相关的代码是不是可以删除了