fix: underline in sheet cell

[Jocs]

close https://github.com/dream-num/univer-pro/issues/668

Pull Request Checklist

• Related tickets or issues have been linked in the PR description (or missing issue).
• Naming convention is followed (do please check it especially when you created new plugins, commands and resources).
• Unit tests have been added for the changes (if applicable).
• Breaking changes have been documented (or no breaking changes introduced in this PR).

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 25 lines in your changes are missing coverage. Please review.

Project coverage is 30.06%. Comparing base (0144179) to head (1c452a5).

Files	Patch %	Lines
...gine-render/src/components/docs/extensions/line.ts	0.00%	23 Missing ⚠️
packages/engine-render/src/context.ts	0.00%	2 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##              dev    #2306   +/-   ##
=======================================
  Coverage   30.06%   30.06%           
=======================================
  Files        1421     1421           
  Lines       73103    73106    +3     
  Branches    15316    15316           
=======================================
+ Hits        21975    21976    +1     
- Misses      51128    51130    +2     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[github-actions]

View Deployment

📑 Examples	📚 Storybook
🔗 Preview link	🔗 Preview link