fix: Revert "perf: Fix memory leak in cachedIterator (#17628)"

[ashwanthgoli]

This reverts commit 87aa954.

What this PR does / why we need it:

Reverts #17628 as it seems to be affecting the correctness of forward queries. The exact problem is not well understood yet, but we suspect that we are closing wrapped iterator before consuming all of the required entires

Which issue(s) this PR fixes:
Fixes #

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Checklist

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• Tests updated
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