chore: Adjust default large query memory

[liurenjie1024]

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What's changed and what's your intention?

Related #13506

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[codecov]

Codecov Report

Attention: 1 lines in your changes are missing coverage. Please review.

Comparison is base (2db9c8e) 68.19% compared to head (de7fdcc) 68.21%.
Report is 1 commits behind head on main.

Files	Patch %	Lines
src/jni_core/src/hummock_iterator.rs	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #13686      +/-   ##
==========================================
+ Coverage   68.19%   68.21%   +0.01%     
==========================================
  Files        1523     1523              
  Lines      262210   262265      +55     
==========================================
+ Hits       178819   178903      +84     
+ Misses      83391    83362      -29     

Flag	Coverage Δ
rust	68.21% <98.66%> (+0.01%)	⬆️

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[chenzl25]

IIRC, this PR #13558 will deprecate this configuration.

[liurenjie1024]

IIRC, this PR #13558 will deprecate this configuration.

I think they are not conflicting. #13558 will fix this in each executor, and we can merge this first to solve the potential oom issue.

[lmatz]

just bump to see if reviewers agree with merging this PR?
the backfill/batch scan perf is still blocked by this OOM issue

[liurenjie1024]

CC @chenzl25 @hzxa21 @Little-Wallace