chore: enable mem table spill

[wcy-fdu]

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What's changed and what's your intention?

As #15232 fixed the inconsistent stream issue, we can enable mem table spill now.

Checklist

• I have written necessary rustdoc comments
• I have added necessary unit tests and integration tests
• I have added test labels as necessary. See details.
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Release note

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[Li0k]

LGTM, PTAL @hzxa21

[hzxa21]

Rest LGTM