Fix the return dtype of arithmetic binary expressions

[AdamGS]

No description provided.

[codspeed-hq]

CodSpeed Performance Report

Merging #4950 will degrade performances by 10.48%

_{Comparing adamg/binary-operator-return-dtype (719d421) with develop (64487cc)}

Summary

❌ 1 regression
✅ 1281 untouched

⚠️ Please fix the performance issues or acknowledge them on CodSpeed.

Benchmarks breakdown

	Benchmark	BASE	HEAD	Change
❌	encode_specialized	1.1 ms	1.2 ms	-10.48%

[codecov]

Codecov Report

❌ Patch coverage is 66.66667% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 87.01%. Comparing base (64487cc) to head (719d421).
⚠️ Report is 1 commits behind head on develop.

Files with missing lines	Patch %	Lines
vortex-expr/src/exprs/binary.rs	33.33%	2 Missing ⚠️

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

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.