branch-4.0: [fix](recycler) skip packed slice deletion during recycle rowsets

[wyxxxcat]

pick: #63295

[hello-stephen]

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1. What problem was fixed (it's best to include specific error reporting information). How it was fixed.
2. Which behaviors were modified. What was the previous behavior, what is it now, why was it modified, and what possible impacts might there be.
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[wyxxxcat]

run buildall

[wyxxxcat]

/review

[github-actions]

I found two issues in the packed-slice recycler changes. The main correctness issue is that packed partial-update rowsets still go through raw prefix deletion, and there is also a batch metrics regression for all-packed rowsets. No additional user focus was provided. I could not load a repository-local code-review SKILL.md in this checkout, so the review followed the prepared prompt workflow, current repo evidence, and two rounds of real subagent convergence.

dismiss