feat(formula): add function mid

[Dushusir]

close #2735

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).

[github-actions]

View Deployment

📑 Examples	📚 Storybook
🔗 Preview link	🔗 Preview link

[github-actions]

Playwright test results

 4 passed

Details

 4 tests across 2 suites
 1 minute, 23 seconds
 4f167e3
 For more information, see full report

[codecov]

Codecov Report

Attention: Patch coverage is 91.52542% with 5 lines in your changes missing coverage. Please review.

Project coverage is 30.81%. Comparing base (b66e8ce) to head (4f167e3).
Report is 1 commits behind head on dev.

Files with missing lines	Patch %	Lines
...ges/engine-formula/src/functions/text/mid/index.ts	89.58%	5 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##              dev    #3417      +/-   ##
==========================================
+ Coverage   30.78%   30.81%   +0.03%     
==========================================
  Files        2157     2158       +1     
  Lines      113176   113230      +54     
  Branches    24812    24837      +25     
==========================================
+ Hits        34844    34897      +53     
- Misses      78332    78333       +1     

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

[oumomomo]

1、单元格内输入=MID("Fluid Flow",20,5)，计算结果预期为空

2、单元格内输入=TEXT(MID(A2,7,8),"0000年00月00日")，计算结果预期为空？

3、单元格内输入=TEXT(MID(A1,7,8),"0000年00月00日") ，计算结果格式不对
A1=13607241990121222341990年12月12日

[univer-bot]

Bot detected the issue body's language is not English, translate it automatically. 👯👭🏻🧑‍🤝‍🧑👫🧑🏿‍🤝‍🧑🏻👩🏾‍🤝‍👨🏿👬🏿

1. Enter =MID("Fluid Flow",20,5) in the cell, and the calculation result is expected to be empty.
   
   

2. Enter =TEXT(MID(A2,7,8),"0000年00月00日") in the cell. Is the calculation result expected to be empty?
   

3. Enter =TEXT(MID(A1,7,8),"0000年00月00日") in the cell, and the calculation result format is incorrect.
   A1=1360724199012122234 December 12, 1990