fix(formula): use different isNullCell for formula modules

[wzhudev]

close #xxx

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).

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Playwright test results

 21 passed

Details

 21 tests across 10 suites
 4 minutes, 44 seconds
 4840379
 For more information, see full report

[codecov]

Codecov Report

Attention: Patch coverage is 75.00000% with 4 lines in your changes missing coverage. Please review.

Project coverage is 33.33%. Comparing base (a90779e) to head (4840379).
Report is 4 commits behind head on dev.

Files with missing lines	Patch %	Lines
...ges/engine-formula/src/services/runtime.service.ts	0.00%	3 Missing ⚠️
packages/engine-formula/src/basics/is-null-cell.ts	90.90%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##              dev    #4395   +/-   ##
=======================================
  Coverage   33.33%   33.33%           
=======================================
  Files        2528     2529    +1     
  Lines      130552   130563   +11     
  Branches    29147    29151    +4     
=======================================
+ Hits        43516    43526   +10     
- Misses      87036    87037    +1     

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