fix: support sheet paste customRange

[ybzky]

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

 4 passed

Details

 4 tests across 2 suites
 1 minute, 23 seconds
 ab972b3
 For more information, see full report

[codecov]

Codecov Report

Attention: Patch coverage is 18.51852% with 22 lines in your changes missing coverage. Please review.

Project coverage is 30.90%. Comparing base (ed6d783) to head (ab972b3).
Report is 19 commits behind head on dev.

Files with missing lines	Patch %	Lines
packages/core/src/shared/clipboard.ts	0.00%	21 Missing ⚠️
...ui/src/services/clipboard/html-to-usm/converter.ts	83.33%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##              dev    #3537      +/-   ##
==========================================
- Coverage   30.94%   30.90%   -0.05%     
==========================================
  Files        2159     2161       +2     
  Lines      113371   113538     +167     
  Branches    24873    24898      +25     
==========================================
+ Hits        35078    35084       +6     
- Misses      78293    78454     +161     

Flag	Coverage Δ
	30.90% <18.51%> (-0.05%)	⬇️

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[wzhudev]

Thinking about extensibility, what features should be builtin here? What about other features like mentions, extensions etc.?