[GLUTEN-7126][VL][1.2] Port Fix shuffle spill triggered by evicting buffers during stop (apache#6422)

[kecookier]

… stop (#6422)

In VeloxHashBasedShuffleWriter::stop, evict partition buffers can allocating extra memory and triggers spill. In this case the target partition buffer should not get shrunk.

Added UT for this case.

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(Fixes: #ISSUE-ID)

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[github-actions[bot]]

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[GLUTEN-${ISSUES_ID}][COMPONENT]feat/fix: ${detailed message}

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[marin-ma]

cc: @weiting-chen

[github-actions[bot]]

https://github.com/apache/incubator-gluten/issues/7126