refactor(rust): Correctly support more types in new-streaming sum

[orlp]

No description provided.

[ritchie46]

You need to add some #[cfg(feature = "dtype-decimal)] and the likes.

[codspeed-hq]

CodSpeed Performance Report

Merging #18580 will improve performances by 25.15%

_{Comparing orlp:new-streaming-sum (8c93e49) with main (e09cd0b)}

Summary

⚡ 1 improvements
✅ 36 untouched benchmarks

Benchmarks breakdown

	Benchmark	main	orlp:new-streaming-sum	Change
⚡	test_groupby_h2oai_q7	2.6 ms	2.1 ms	+25.15%