fix(engine-formula): skip embedded refs for other formulas

[OTime-Coder]

Summary

• Track the current dependency tree formula type in formula runtime context.
• Only collect embedded array formula refs for normal worksheet formulas.
• Pass formula dependency type through calculation and dependency analysis paths.
• Add a runtime regression test for OTHER_FORMULA vs NORMAL_FORMULA embedded ref collection.

Closes #6984

Validation

• pnpm exec vitest run packages/engine-formula/src/services/tests/runtime.service.spec.ts
• pnpm --filter @univerjs/engine-formula typecheck

[github-actions]

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Playwright test results

 28 passed

Details

 28 tests across 12 suites
 7 minutes, 40 seconds
 96875a3
 For more information, see full report and artifacts

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 61.37%. Comparing base (bdd4a43) to head (96875a3).
⚠️ Report is 1 commits behind head on dev.

Additional details and impacted files

@@            Coverage Diff             @@
##              dev    #6983      +/-   ##
==========================================
+ Coverage   61.36%   61.37%   +0.01%     
==========================================
  Files        2587     2588       +1     
  Lines      150932   150936       +4     
  Branches    34269    34271       +2     
==========================================
+ Hits        92613    92634      +21     
+ Misses      58319    58302      -17     

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